Home / 2,427.12-3,641.40-783.90

Finding the Fourth Proportional to 2,427.12, 3,641.40 and 783.90

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Solution

The fourth proportional to 2,427.12, 3,641.40 and 783.90 is: 1,176.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,427.12 : 3,641.40 = 783.90 : x
  2. Step 2: Convert to fraction form
    2,427.12/3,641.40 = 783.90/x
  3. Step 3: Cross multiply
    2,427.12x = 3,641.40 × 783.90
  4. Step 4: Simplify right side
    2,427.12x = 2,854,493.46
  5. Step 5: Solve for x
    x = 2,854,493.46/2,427.12
  6. Step 6: Final answer
    x = 1,176.08

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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.