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Finding the Fourth Proportional to 9,170.02, 12,655.68 and 8,607.04

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Solution

The fourth proportional to 9,170.02, 12,655.68 and 8,607.04 is: 11,878.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,170.02 : 12,655.68 = 8,607.04 : x
  2. Step 2: Convert to fraction form
    9,170.02/12,655.68 = 8,607.04/x
  3. Step 3: Cross multiply
    9,170.02x = 12,655.68 × 8,607.04
  4. Step 4: Simplify right side
    9,170.02x = 108,927,943.99
  5. Step 5: Solve for x
    x = 108,927,943.99/9,170.02
  6. Step 6: Final answer
    x = 11,878.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.