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Finding the Fourth Proportional to 8,593.80, 12,890.70 and 5,313.30

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Solution

The fourth proportional to 8,593.80, 12,890.70 and 5,313.30 is: 7,969.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,593.80 : 12,890.70 = 5,313.30 : x
  2. Step 2: Convert to fraction form
    8,593.80/12,890.70 = 5,313.30/x
  3. Step 3: Cross multiply
    8,593.80x = 12,890.70 × 5,313.30
  4. Step 4: Simplify right side
    8,593.80x = 68,492,156.31
  5. Step 5: Solve for x
    x = 68,492,156.31/8,593.80
  6. Step 6: Final answer
    x = 7,969.95

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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.