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Finding the Fourth Proportional to 8,681.52, 11,967.72 and 6,155.82

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Solution

The fourth proportional to 8,681.52, 11,967.72 and 6,155.82 is: 8,485.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.52 : 11,967.72 = 6,155.82 : x
  2. Step 2: Convert to fraction form
    8,681.52/11,967.72 = 6,155.82/x
  3. Step 3: Cross multiply
    8,681.52x = 11,967.72 × 6,155.82
  4. Step 4: Simplify right side
    8,681.52x = 73,671,130.13
  5. Step 5: Solve for x
    x = 73,671,130.13/8,681.52
  6. Step 6: Final answer
    x = 8,485.97

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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.