Home / 5,242.28-7,866.45-2,645.42

Finding the Fourth Proportional to 5,242.28, 7,866.45 and 2,645.42

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Solution

The fourth proportional to 5,242.28, 7,866.45 and 2,645.42 is: 3,969.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,242.28 : 7,866.45 = 2,645.42 : x
  2. Step 2: Convert to fraction form
    5,242.28/7,866.45 = 2,645.42/x
  3. Step 3: Cross multiply
    5,242.28x = 7,866.45 × 2,645.42
  4. Step 4: Simplify right side
    5,242.28x = 20,810,024.83
  5. Step 5: Solve for x
    x = 20,810,024.83/5,242.28
  6. Step 6: Final answer
    x = 3,969.66

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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.