Home / 5,210.76-7,190.86-2,853.05

Finding the Fourth Proportional to 5,210.76, 7,190.86 and 2,853.05

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Solution

The fourth proportional to 5,210.76, 7,190.86 and 2,853.05 is: 3,937.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,210.76 : 7,190.86 = 2,853.05 : x
  2. Step 2: Convert to fraction form
    5,210.76/7,190.86 = 2,853.05/x
  3. Step 3: Cross multiply
    5,210.76x = 7,190.86 × 2,853.05
  4. Step 4: Simplify right side
    5,210.76x = 20,515,883.12
  5. Step 5: Solve for x
    x = 20,515,883.12/5,210.76
  6. Step 6: Final answer
    x = 3,937.22

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Half scale
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Double scale
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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.