Home / 5,136.38-7,088.20-2,778.52

Finding the Fourth Proportional to 5,136.38, 7,088.20 and 2,778.52

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Solution

The fourth proportional to 5,136.38, 7,088.20 and 2,778.52 is: 3,834.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.38 : 7,088.20 = 2,778.52 : x
  2. Step 2: Convert to fraction form
    5,136.38/7,088.20 = 2,778.52/x
  3. Step 3: Cross multiply
    5,136.38x = 7,088.20 × 2,778.52
  4. Step 4: Simplify right side
    5,136.38x = 19,694,663.08
  5. Step 5: Solve for x
    x = 19,694,663.08/5,136.38
  6. Step 6: Final answer
    x = 3,834.35

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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.