Home / 8,731.91-13,086.08-4,777.20

Finding the Fourth Proportional to 8,731.91, 13,086.08 and 4,777.20

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Solution

The fourth proportional to 8,731.91, 13,086.08 and 4,777.20 is: 7,159.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,731.91 : 13,086.08 = 4,777.20 : x
  2. Step 2: Convert to fraction form
    8,731.91/13,086.08 = 4,777.20/x
  3. Step 3: Cross multiply
    8,731.91x = 13,086.08 × 4,777.20
  4. Step 4: Simplify right side
    8,731.91x = 62,514,821.38
  5. Step 5: Solve for x
    x = 62,514,821.38/8,731.91
  6. Step 6: Final answer
    x = 7,159.35

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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.