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Finding the Fourth Proportional to 8,663.76, 11,959.06 and 5,126.96

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Solution

The fourth proportional to 8,663.76, 11,959.06 and 5,126.96 is: 7,077.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,663.76 : 11,959.06 = 5,126.96 : x
  2. Step 2: Convert to fraction form
    8,663.76/11,959.06 = 5,126.96/x
  3. Step 3: Cross multiply
    8,663.76x = 11,959.06 × 5,126.96
  4. Step 4: Simplify right side
    8,663.76x = 61,313,639.34
  5. Step 5: Solve for x
    x = 61,313,639.34/8,663.76
  6. Step 6: Final answer
    x = 7,077.02

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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.