Home / 7,146.90-10,720.35-3,456.34

Finding the Fourth Proportional to 7,146.90, 10,720.35 and 3,456.34

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Solution

The fourth proportional to 7,146.90, 10,720.35 and 3,456.34 is: 5,184.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,146.90 : 10,720.35 = 3,456.34 : x
  2. Step 2: Convert to fraction form
    7,146.90/10,720.35 = 3,456.34/x
  3. Step 3: Cross multiply
    7,146.90x = 10,720.35 × 3,456.34
  4. Step 4: Simplify right side
    7,146.90x = 37,053,147.72
  5. Step 5: Solve for x
    x = 37,053,147.72/7,146.90
  6. Step 6: Final answer
    x = 5,184.51

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Similar ratio
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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.