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Finding the Fourth Proportional to 8,732.79, 13,099.05 and 2,159.06

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Solution

The fourth proportional to 8,732.79, 13,099.05 and 2,159.06 is: 3,238.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,732.79 : 13,099.05 = 2,159.06 : x
  2. Step 2: Convert to fraction form
    8,732.79/13,099.05 = 2,159.06/x
  3. Step 3: Cross multiply
    8,732.79x = 13,099.05 × 2,159.06
  4. Step 4: Simplify right side
    8,732.79x = 28,281,569.40
  5. Step 5: Solve for x
    x = 28,281,569.40/8,732.79
  6. Step 6: Final answer
    x = 3,238.55

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1.5x scale

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.