Home / 8,837.60-12,189.54-5,690.78

Finding the Fourth Proportional to 8,837.60, 12,189.54 and 5,690.78

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Solution

The fourth proportional to 8,837.60, 12,189.54 and 5,690.78 is: 7,849.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,837.60 : 12,189.54 = 5,690.78 : x
  2. Step 2: Convert to fraction form
    8,837.60/12,189.54 = 5,690.78/x
  3. Step 3: Cross multiply
    8,837.60x = 12,189.54 × 5,690.78
  4. Step 4: Simplify right side
    8,837.60x = 69,367,990.44
  5. Step 5: Solve for x
    x = 69,367,990.44/8,837.60
  6. Step 6: Final answer
    x = 7,849.19

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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.