Home / 8,721.86-12,036.11-4,742.98

Finding the Fourth Proportional to 8,721.86, 12,036.11 and 4,742.98

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Solution

The fourth proportional to 8,721.86, 12,036.11 and 4,742.98 is: 6,545.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.86 : 12,036.11 = 4,742.98 : x
  2. Step 2: Convert to fraction form
    8,721.86/12,036.11 = 4,742.98/x
  3. Step 3: Cross multiply
    8,721.86x = 12,036.11 × 4,742.98
  4. Step 4: Simplify right side
    8,721.86x = 57,087,029.01
  5. Step 5: Solve for x
    x = 57,087,029.01/8,721.86
  6. Step 6: Final answer
    x = 6,545.28

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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.