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Finding the Fourth Proportional to 3,058.76, 4,221.21 and 1,880.21

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Solution

The fourth proportional to 3,058.76, 4,221.21 and 1,880.21 is: 2,594.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,058.76 : 4,221.21 = 1,880.21 : x
  2. Step 2: Convert to fraction form
    3,058.76/4,221.21 = 1,880.21/x
  3. Step 3: Cross multiply
    3,058.76x = 4,221.21 × 1,880.21
  4. Step 4: Simplify right side
    3,058.76x = 7,936,778.86
  5. Step 5: Solve for x
    x = 7,936,778.86/3,058.76
  6. Step 6: Final answer
    x = 2,594.77

Related Problems

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Half scale
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Double scale
Find fourth proportional to 3,059.76, 4,222.59 and 1,881.21
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.