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Finding the Fourth Proportional to 9,369.60, 12,902.40 and 8,374.50

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Solution

The fourth proportional to 9,369.60, 12,902.40 and 8,374.50 is: 11,532.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,369.60 : 12,902.40 = 8,374.50 : x
  2. Step 2: Convert to fraction form
    9,369.60/12,902.40 = 8,374.50/x
  3. Step 3: Cross multiply
    9,369.60x = 12,902.40 × 8,374.50
  4. Step 4: Simplify right side
    9,369.60x = 108,051,148.80
  5. Step 5: Solve for x
    x = 108,051,148.80/9,369.60
  6. Step 6: Final answer
    x = 11,532.10

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1.5x scale

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.