Home / 3,077.93-4,247.58-1,680.68

Finding the Fourth Proportional to 3,077.93, 4,247.58 and 1,680.68

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Solution

The fourth proportional to 3,077.93, 4,247.58 and 1,680.68 is: 2,319.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,077.93 : 4,247.58 = 1,680.68 : x
  2. Step 2: Convert to fraction form
    3,077.93/4,247.58 = 1,680.68/x
  3. Step 3: Cross multiply
    3,077.93x = 4,247.58 × 1,680.68
  4. Step 4: Simplify right side
    3,077.93x = 7,138,822.75
  5. Step 5: Solve for x
    x = 7,138,822.75/3,077.93
  6. Step 6: Final answer
    x = 2,319.36

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Half scale
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Double scale
Find fourth proportional to 3,078.93, 4,248.96 and 1,681.68
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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.