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Finding the Fourth Proportional to 8,589.68, 12,885.21 and 2,746.30

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Solution

The fourth proportional to 8,589.68, 12,885.21 and 2,746.30 is: 4,119.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,589.68 : 12,885.21 = 2,746.30 : x
  2. Step 2: Convert to fraction form
    8,589.68/12,885.21 = 2,746.30/x
  3. Step 3: Cross multiply
    8,589.68x = 12,885.21 × 2,746.30
  4. Step 4: Simplify right side
    8,589.68x = 35,386,574.07
  5. Step 5: Solve for x
    x = 35,386,574.07/8,589.68
  6. Step 6: Final answer
    x = 4,119.66

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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.