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Finding the Fourth Proportional to 1,531.74, 2,124.65 and 1,479.29

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Solution

The fourth proportional to 1,531.74, 2,124.65 and 1,479.29 is: 2,051.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.74 : 2,124.65 = 1,479.29 : x
  2. Step 2: Convert to fraction form
    1,531.74/2,124.65 = 1,479.29/x
  3. Step 3: Cross multiply
    1,531.74x = 2,124.65 × 1,479.29
  4. Step 4: Simplify right side
    1,531.74x = 3,142,973.50
  5. Step 5: Solve for x
    x = 3,142,973.50/1,531.74
  6. Step 6: Final answer
    x = 2,051.90

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.