Home / 2,431.60-3,347.91-2,209.87

Finding the Fourth Proportional to 2,431.60, 3,347.91 and 2,209.87

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Solution

The fourth proportional to 2,431.60, 3,347.91 and 2,209.87 is: 3,042.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.60 : 3,347.91 = 2,209.87 : x
  2. Step 2: Convert to fraction form
    2,431.60/3,347.91 = 2,209.87/x
  3. Step 3: Cross multiply
    2,431.60x = 3,347.91 × 2,209.87
  4. Step 4: Simplify right side
    2,431.60x = 7,398,445.87
  5. Step 5: Solve for x
    x = 7,398,445.87/2,431.60
  6. Step 6: Final answer
    x = 3,042.62

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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.