Home / 5,142.29-7,712.55-1,854.90

Finding the Fourth Proportional to 5,142.29, 7,712.55 and 1,854.90

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Solution

The fourth proportional to 5,142.29, 7,712.55 and 1,854.90 is: 2,782.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.29 : 7,712.55 = 1,854.90 : x
  2. Step 2: Convert to fraction form
    5,142.29/7,712.55 = 1,854.90/x
  3. Step 3: Cross multiply
    5,142.29x = 7,712.55 × 1,854.90
  4. Step 4: Simplify right side
    5,142.29x = 14,306,009.00
  5. Step 5: Solve for x
    x = 14,306,009.00/5,142.29
  6. Step 6: Final answer
    x = 2,782.03

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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.