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Finding the Fourth Proportional to 8,948.60, 12,343.02 and 7,374.20

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Solution

The fourth proportional to 8,948.60, 12,343.02 and 7,374.20 is: 10,171.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,948.60 : 12,343.02 = 7,374.20 : x
  2. Step 2: Convert to fraction form
    8,948.60/12,343.02 = 7,374.20/x
  3. Step 3: Cross multiply
    8,948.60x = 12,343.02 × 7,374.20
  4. Step 4: Simplify right side
    8,948.60x = 91,019,898.08
  5. Step 5: Solve for x
    x = 91,019,898.08/8,948.60
  6. Step 6: Final answer
    x = 10,171.41

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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.