Home / 2,709.12-4,058.40-1,781.88

Finding the Fourth Proportional to 2,709.12, 4,058.40 and 1,781.88

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Solution

The fourth proportional to 2,709.12, 4,058.40 and 1,781.88 is: 2,669.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,709.12 : 4,058.40 = 1,781.88 : x
  2. Step 2: Convert to fraction form
    2,709.12/4,058.40 = 1,781.88/x
  3. Step 3: Cross multiply
    2,709.12x = 4,058.40 × 1,781.88
  4. Step 4: Simplify right side
    2,709.12x = 7,231,581.79
  5. Step 5: Solve for x
    x = 7,231,581.79/2,709.12
  6. Step 6: Final answer
    x = 2,669.35

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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.