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Finding the Fourth Proportional to 8,689.25, 11,990.99 and 4,710.29

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Solution

The fourth proportional to 8,689.25, 11,990.99 and 4,710.29 is: 6,500.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,689.25 : 11,990.99 = 4,710.29 : x
  2. Step 2: Convert to fraction form
    8,689.25/11,990.99 = 4,710.29/x
  3. Step 3: Cross multiply
    8,689.25x = 11,990.99 × 4,710.29
  4. Step 4: Simplify right side
    8,689.25x = 56,480,992.11
  5. Step 5: Solve for x
    x = 56,480,992.11/8,689.25
  6. Step 6: Final answer
    x = 6,500.10

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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.