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Finding the Fourth Proportional to 4,479.86, 6,721.14 and 1,558.28

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Solution

The fourth proportional to 4,479.86, 6,721.14 and 1,558.28 is: 2,337.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,479.86 : 6,721.14 = 1,558.28 : x
  2. Step 2: Convert to fraction form
    4,479.86/6,721.14 = 1,558.28/x
  3. Step 3: Cross multiply
    4,479.86x = 6,721.14 × 1,558.28
  4. Step 4: Simplify right side
    4,479.86x = 10,473,418.04
  5. Step 5: Solve for x
    x = 10,473,418.04/4,479.86
  6. Step 6: Final answer
    x = 2,337.89

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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.