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Finding the Fourth Proportional to 8,474.39, 11,695.02 and 5,637.21

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Solution

The fourth proportional to 8,474.39, 11,695.02 and 5,637.21 is: 7,779.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,474.39 : 11,695.02 = 5,637.21 : x
  2. Step 2: Convert to fraction form
    8,474.39/11,695.02 = 5,637.21/x
  3. Step 3: Cross multiply
    8,474.39x = 11,695.02 × 5,637.21
  4. Step 4: Simplify right side
    8,474.39x = 65,927,218.70
  5. Step 5: Solve for x
    x = 65,927,218.70/8,474.39
  6. Step 6: Final answer
    x = 7,779.58

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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.