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Finding the Fourth Proportional to 8,655.73, 11,946.47 and 8,261.31

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Solution

The fourth proportional to 8,655.73, 11,946.47 and 8,261.31 is: 11,402.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655.73 : 11,946.47 = 8,261.31 : x
  2. Step 2: Convert to fraction form
    8,655.73/11,946.47 = 8,261.31/x
  3. Step 3: Cross multiply
    8,655.73x = 11,946.47 × 8,261.31
  4. Step 4: Simplify right side
    8,655.73x = 98,693,492.08
  5. Step 5: Solve for x
    x = 98,693,492.08/8,655.73
  6. Step 6: Final answer
    x = 11,402.10

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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.