Home / 3,151.90-4,727.85-3,130.30

Finding the Fourth Proportional to 3,151.90, 4,727.85 and 3,130.30

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Solution

The fourth proportional to 3,151.90, 4,727.85 and 3,130.30 is: 4,695.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.90 : 4,727.85 = 3,130.30 : x
  2. Step 2: Convert to fraction form
    3,151.90/4,727.85 = 3,130.30/x
  3. Step 3: Cross multiply
    3,151.90x = 4,727.85 × 3,130.30
  4. Step 4: Simplify right side
    3,151.90x = 14,799,588.86
  5. Step 5: Solve for x
    x = 14,799,588.86/3,151.90
  6. Step 6: Final answer
    x = 4,695.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.