Home / 2,221.32-3,331.65-1,397.07

Finding the Fourth Proportional to 2,221.32, 3,331.65 and 1,397.07

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Solution

The fourth proportional to 2,221.32, 3,331.65 and 1,397.07 is: 2,095.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.32 : 3,331.65 = 1,397.07 : x
  2. Step 2: Convert to fraction form
    2,221.32/3,331.65 = 1,397.07/x
  3. Step 3: Cross multiply
    2,221.32x = 3,331.65 × 1,397.07
  4. Step 4: Simplify right side
    2,221.32x = 4,654,548.27
  5. Step 5: Solve for x
    x = 4,654,548.27/2,221.32
  6. Step 6: Final answer
    x = 2,095.40

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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.