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Finding the Fourth Proportional to 8,654.02, 12,981.10 and 4,756.30

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Solution

The fourth proportional to 8,654.02, 12,981.10 and 4,756.30 is: 7,134.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,654.02 : 12,981.10 = 4,756.30 : x
  2. Step 2: Convert to fraction form
    8,654.02/12,981.10 = 4,756.30/x
  3. Step 3: Cross multiply
    8,654.02x = 12,981.10 × 4,756.30
  4. Step 4: Simplify right side
    8,654.02x = 61,742,005.93
  5. Step 5: Solve for x
    x = 61,742,005.93/8,654.02
  6. Step 6: Final answer
    x = 7,134.49

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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.