Home / 7,042.92-9,719.40-3,899.34

Finding the Fourth Proportional to 7,042.92, 9,719.40 and 3,899.34

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Solution

The fourth proportional to 7,042.92, 9,719.40 and 3,899.34 is: 5,381.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,042.92 : 9,719.40 = 3,899.34 : x
  2. Step 2: Convert to fraction form
    7,042.92/9,719.40 = 3,899.34/x
  3. Step 3: Cross multiply
    7,042.92x = 9,719.40 × 3,899.34
  4. Step 4: Simplify right side
    7,042.92x = 37,899,245.20
  5. Step 5: Solve for x
    x = 37,899,245.20/7,042.92
  6. Step 6: Final answer
    x = 5,381.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.