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Finding the Fourth Proportional to 8,655.74, 11,946.47 and 8,261.32

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Solution

The fourth proportional to 8,655.74, 11,946.47 and 8,261.32 is: 11,402.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655.74 : 11,946.47 = 8,261.32 : x
  2. Step 2: Convert to fraction form
    8,655.74/11,946.47 = 8,261.32/x
  3. Step 3: Cross multiply
    8,655.74x = 11,946.47 × 8,261.32
  4. Step 4: Simplify right side
    8,655.74x = 98,693,510.50
  5. Step 5: Solve for x
    x = 98,693,510.50/8,655.74
  6. Step 6: Final answer
    x = 11,402.09

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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.