Home / 8,721.73-12,036.11-4,742.91

Finding the Fourth Proportional to 8,721.73, 12,036.11 and 4,742.91

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Solution

The fourth proportional to 8,721.73, 12,036.11 and 4,742.91 is: 6,545.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.73 : 12,036.11 = 4,742.91 : x
  2. Step 2: Convert to fraction form
    8,721.73/12,036.11 = 4,742.91/x
  3. Step 3: Cross multiply
    8,721.73x = 12,036.11 × 4,742.91
  4. Step 4: Simplify right side
    8,721.73x = 57,086,186.48
  5. Step 5: Solve for x
    x = 57,086,186.48/8,721.73
  6. Step 6: Final answer
    x = 6,545.28

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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.