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Finding the Fourth Proportional to 8,880.87, 13,306.60 and 7,965.15

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Solution

The fourth proportional to 8,880.87, 13,306.60 and 7,965.15 is: 11,934.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,880.87 : 13,306.60 = 7,965.15 : x
  2. Step 2: Convert to fraction form
    8,880.87/13,306.60 = 7,965.15/x
  3. Step 3: Cross multiply
    8,880.87x = 13,306.60 × 7,965.15
  4. Step 4: Simplify right side
    8,880.87x = 105,989,064.99
  5. Step 5: Solve for x
    x = 105,989,064.99/8,880.87
  6. Step 6: Final answer
    x = 11,934.54

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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.