Home / 8,721.88-12,036.14-4,742.89

Finding the Fourth Proportional to 8,721.88, 12,036.14 and 4,742.89

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Solution

The fourth proportional to 8,721.88, 12,036.14 and 4,742.89 is: 6,545.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.88 : 12,036.14 = 4,742.89 : x
  2. Step 2: Convert to fraction form
    8,721.88/12,036.14 = 4,742.89/x
  3. Step 3: Cross multiply
    8,721.88x = 12,036.14 × 4,742.89
  4. Step 4: Simplify right side
    8,721.88x = 57,086,064.33
  5. Step 5: Solve for x
    x = 57,086,064.33/8,721.88
  6. Step 6: Final answer
    x = 6,545.16

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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.