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Finding the Fourth Proportional to 7,881.92, 10,877.08 and 4,345.06

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Solution

The fourth proportional to 7,881.92, 10,877.08 and 4,345.06 is: 5,996.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.92 : 10,877.08 = 4,345.06 : x
  2. Step 2: Convert to fraction form
    7,881.92/10,877.08 = 4,345.06/x
  3. Step 3: Cross multiply
    7,881.92x = 10,877.08 × 4,345.06
  4. Step 4: Simplify right side
    7,881.92x = 47,261,565.22
  5. Step 5: Solve for x
    x = 47,261,565.22/7,881.92
  6. Step 6: Final answer
    x = 5,996.20

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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.