Home / 10,287.57-15,431.93-2,891.46

Finding the Fourth Proportional to 10,287.57, 15,431.93 and 2,891.46

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Solution

The fourth proportional to 10,287.57, 15,431.93 and 2,891.46 is: 4,337.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,287.57 : 15,431.93 = 2,891.46 : x
  2. Step 2: Convert to fraction form
    10,287.57/15,431.93 = 2,891.46/x
  3. Step 3: Cross multiply
    10,287.57x = 15,431.93 × 2,891.46
  4. Step 4: Simplify right side
    10,287.57x = 44,620,793.86
  5. Step 5: Solve for x
    x = 44,620,793.86/10,287.57
  6. Step 6: Final answer
    x = 4,337.35

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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.