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Finding the Fourth Proportional to 8,901.72, 12,247.80 and 8,683.08

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Solution

The fourth proportional to 8,901.72, 12,247.80 and 8,683.08 is: 11,946.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,901.72 : 12,247.80 = 8,683.08 : x
  2. Step 2: Convert to fraction form
    8,901.72/12,247.80 = 8,683.08/x
  3. Step 3: Cross multiply
    8,901.72x = 12,247.80 × 8,683.08
  4. Step 4: Simplify right side
    8,901.72x = 106,348,627.22
  5. Step 5: Solve for x
    x = 106,348,627.22/8,901.72
  6. Step 6: Final answer
    x = 11,946.98

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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.