Home / 10,280.82-15,421.32-2,489.64

Finding the Fourth Proportional to 10,280.82, 15,421.32 and 2,489.64

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Solution

The fourth proportional to 10,280.82, 15,421.32 and 2,489.64 is: 3,734.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,280.82 : 15,421.32 = 2,489.64 : x
  2. Step 2: Convert to fraction form
    10,280.82/15,421.32 = 2,489.64/x
  3. Step 3: Cross multiply
    10,280.82x = 15,421.32 × 2,489.64
  4. Step 4: Simplify right side
    10,280.82x = 38,393,535.12
  5. Step 5: Solve for x
    x = 38,393,535.12/10,280.82
  6. Step 6: Final answer
    x = 3,734.48

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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.