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Finding the Fourth Proportional to 8,985.84, 12,405.60 and 6,006.72

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Solution

The fourth proportional to 8,985.84, 12,405.60 and 6,006.72 is: 8,292.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.84 : 12,405.60 = 6,006.72 : x
  2. Step 2: Convert to fraction form
    8,985.84/12,405.60 = 6,006.72/x
  3. Step 3: Cross multiply
    8,985.84x = 12,405.60 × 6,006.72
  4. Step 4: Simplify right side
    8,985.84x = 74,516,965.63
  5. Step 5: Solve for x
    x = 74,516,965.63/8,985.84
  6. Step 6: Final answer
    x = 8,292.71

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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.