Home / 8,721.82-12,036.12-4,742.92

Finding the Fourth Proportional to 8,721.82, 12,036.12 and 4,742.92

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Solution

The fourth proportional to 8,721.82, 12,036.12 and 4,742.92 is: 6,545.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.82 : 12,036.12 = 4,742.92 : x
  2. Step 2: Convert to fraction form
    8,721.82/12,036.12 = 4,742.92/x
  3. Step 3: Cross multiply
    8,721.82x = 12,036.12 × 4,742.92
  4. Step 4: Simplify right side
    8,721.82x = 57,086,354.27
  5. Step 5: Solve for x
    x = 57,086,354.27/8,721.82
  6. Step 6: Final answer
    x = 6,545.23

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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.