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Finding the Fourth Proportional to 8,989.53, 13,484.16 and 3,145.92

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Solution

The fourth proportional to 8,989.53, 13,484.16 and 3,145.92 is: 4,718.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.53 : 13,484.16 = 3,145.92 : x
  2. Step 2: Convert to fraction form
    8,989.53/13,484.16 = 3,145.92/x
  3. Step 3: Cross multiply
    8,989.53x = 13,484.16 × 3,145.92
  4. Step 4: Simplify right side
    8,989.53x = 42,420,088.63
  5. Step 5: Solve for x
    x = 42,420,088.63/8,989.53
  6. Step 6: Final answer
    x = 4,718.83

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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.