Home / 4,920.95-7,391.66-3,985.00

Finding the Fourth Proportional to 4,920.95, 7,391.66 and 3,985.00

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Solution

The fourth proportional to 4,920.95, 7,391.66 and 3,985.00 is: 5,985.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.95 : 7,391.66 = 3,985.00 : x
  2. Step 2: Convert to fraction form
    4,920.95/7,391.66 = 3,985.00/x
  3. Step 3: Cross multiply
    4,920.95x = 7,391.66 × 3,985.00
  4. Step 4: Simplify right side
    4,920.95x = 29,455,726.70
  5. Step 5: Solve for x
    x = 29,455,726.70/4,920.95
  6. Step 6: Final answer
    x = 5,985.78

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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.