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Finding the Fourth Proportional to 6,659.60, 9,988.52 and 1,729.58

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Solution

The fourth proportional to 6,659.60, 9,988.52 and 1,729.58 is: 2,594.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,659.60 : 9,988.52 = 1,729.58 : x
  2. Step 2: Convert to fraction form
    6,659.60/9,988.52 = 1,729.58/x
  3. Step 3: Cross multiply
    6,659.60x = 9,988.52 × 1,729.58
  4. Step 4: Simplify right side
    6,659.60x = 17,275,944.42
  5. Step 5: Solve for x
    x = 17,275,944.42/6,659.60
  6. Step 6: Final answer
    x = 2,594.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.