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Finding the Fourth Proportional to 8,990.97, 13,485.87 and 4,314.30

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Solution

The fourth proportional to 8,990.97, 13,485.87 and 4,314.30 is: 6,471.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.97 : 13,485.87 = 4,314.30 : x
  2. Step 2: Convert to fraction form
    8,990.97/13,485.87 = 4,314.30/x
  3. Step 3: Cross multiply
    8,990.97x = 13,485.87 × 4,314.30
  4. Step 4: Simplify right side
    8,990.97x = 58,182,088.94
  5. Step 5: Solve for x
    x = 58,182,088.94/8,990.97
  6. Step 6: Final answer
    x = 6,471.17

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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.