Home / 10,498.97-15,749.28-3,478.70

Finding the Fourth Proportional to 10,498.97, 15,749.28 and 3,478.70

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Solution

The fourth proportional to 10,498.97, 15,749.28 and 3,478.70 is: 5,218.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,498.97 : 15,749.28 = 3,478.70 : x
  2. Step 2: Convert to fraction form
    10,498.97/15,749.28 = 3,478.70/x
  3. Step 3: Cross multiply
    10,498.97x = 15,749.28 × 3,478.70
  4. Step 4: Simplify right side
    10,498.97x = 54,787,020.34
  5. Step 5: Solve for x
    x = 54,787,020.34/10,498.97
  6. Step 6: Final answer
    x = 5,218.32

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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.