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Finding the Fourth Proportional to 8,446.31, 11,655.88 and 4,720.31

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Solution

The fourth proportional to 8,446.31, 11,655.88 and 4,720.31 is: 6,514.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,446.31 : 11,655.88 = 4,720.31 : x
  2. Step 2: Convert to fraction form
    8,446.31/11,655.88 = 4,720.31/x
  3. Step 3: Cross multiply
    8,446.31x = 11,655.88 × 4,720.31
  4. Step 4: Simplify right side
    8,446.31x = 55,019,366.92
  5. Step 5: Solve for x
    x = 55,019,366.92/8,446.31
  6. Step 6: Final answer
    x = 6,514.01

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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.