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Finding the Fourth Proportional to 8,681.02, 11,971.93 and 5,695.72

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Solution

The fourth proportional to 8,681.02, 11,971.93 and 5,695.72 is: 7,854.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.02 : 11,971.93 = 5,695.72 : x
  2. Step 2: Convert to fraction form
    8,681.02/11,971.93 = 5,695.72/x
  3. Step 3: Cross multiply
    8,681.02x = 11,971.93 × 5,695.72
  4. Step 4: Simplify right side
    8,681.02x = 68,188,672.80
  5. Step 5: Solve for x
    x = 68,188,672.80/8,681.02
  6. Step 6: Final answer
    x = 7,854.92

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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.