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Finding the Fourth Proportional to 8,663.49, 11,955.20 and 4,886.69

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Solution

The fourth proportional to 8,663.49, 11,955.20 and 4,886.69 is: 6,743.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,663.49 : 11,955.20 = 4,886.69 : x
  2. Step 2: Convert to fraction form
    8,663.49/11,955.20 = 4,886.69/x
  3. Step 3: Cross multiply
    8,663.49x = 11,955.20 × 4,886.69
  4. Step 4: Simplify right side
    8,663.49x = 58,421,272.08
  5. Step 5: Solve for x
    x = 58,421,272.08/8,663.49
  6. Step 6: Final answer
    x = 6,743.39

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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.