Home / 3,617.20-5,426.40-1,538.20

Finding the Fourth Proportional to 3,617.20, 5,426.40 and 1,538.20

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Solution

The fourth proportional to 3,617.20, 5,426.40 and 1,538.20 is: 2,307.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,617.20 : 5,426.40 = 1,538.20 : x
  2. Step 2: Convert to fraction form
    3,617.20/5,426.40 = 1,538.20/x
  3. Step 3: Cross multiply
    3,617.20x = 5,426.40 × 1,538.20
  4. Step 4: Simplify right side
    3,617.20x = 8,346,888.48
  5. Step 5: Solve for x
    x = 8,346,888.48/3,617.20
  6. Step 6: Final answer
    x = 2,307.56

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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.