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Finding the Fourth Proportional to 8,916.30, 13,374.45 and 7,490.70

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Solution

The fourth proportional to 8,916.30, 13,374.45 and 7,490.70 is: 11,236.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,916.30 : 13,374.45 = 7,490.70 : x
  2. Step 2: Convert to fraction form
    8,916.30/13,374.45 = 7,490.70/x
  3. Step 3: Cross multiply
    8,916.30x = 13,374.45 × 7,490.70
  4. Step 4: Simplify right side
    8,916.30x = 100,183,992.62
  5. Step 5: Solve for x
    x = 100,183,992.62/8,916.30
  6. Step 6: Final answer
    x = 11,236.05

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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.