Home / 5,657.12-8,489.40-2,538.80

Finding the Fourth Proportional to 5,657.12, 8,489.40 and 2,538.80

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Solution

The fourth proportional to 5,657.12, 8,489.40 and 2,538.80 is: 3,809.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,657.12 : 8,489.40 = 2,538.80 : x
  2. Step 2: Convert to fraction form
    5,657.12/8,489.40 = 2,538.80/x
  3. Step 3: Cross multiply
    5,657.12x = 8,489.40 × 2,538.80
  4. Step 4: Simplify right side
    5,657.12x = 21,552,888.72
  5. Step 5: Solve for x
    x = 21,552,888.72/5,657.12
  6. Step 6: Final answer
    x = 3,809.87

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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.