Home / 8,708.40-12,016.20-5,725.44

Finding the Fourth Proportional to 8,708.40, 12,016.20 and 5,725.44

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Solution

The fourth proportional to 8,708.40, 12,016.20 and 5,725.44 is: 7,900.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,708.40 : 12,016.20 = 5,725.44 : x
  2. Step 2: Convert to fraction form
    8,708.40/12,016.20 = 5,725.44/x
  3. Step 3: Cross multiply
    8,708.40x = 12,016.20 × 5,725.44
  4. Step 4: Simplify right side
    8,708.40x = 68,798,032.13
  5. Step 5: Solve for x
    x = 68,798,032.13/8,708.40
  6. Step 6: Final answer
    x = 7,900.19

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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.