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Finding the Fourth Proportional to 8,459.84, 12,689.72 and 2,615.04

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Solution

The fourth proportional to 8,459.84, 12,689.72 and 2,615.04 is: 3,922.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,459.84 : 12,689.72 = 2,615.04 : x
  2. Step 2: Convert to fraction form
    8,459.84/12,689.72 = 2,615.04/x
  3. Step 3: Cross multiply
    8,459.84x = 12,689.72 × 2,615.04
  4. Step 4: Simplify right side
    8,459.84x = 33,184,125.39
  5. Step 5: Solve for x
    x = 33,184,125.39/8,459.84
  6. Step 6: Final answer
    x = 3,922.55

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Similar ratio
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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.