Home / 2,655.18-3,985.17-1,357.56

Finding the Fourth Proportional to 2,655.18, 3,985.17 and 1,357.56

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Solution

The fourth proportional to 2,655.18, 3,985.17 and 1,357.56 is: 2,037.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,655.18 : 3,985.17 = 1,357.56 : x
  2. Step 2: Convert to fraction form
    2,655.18/3,985.17 = 1,357.56/x
  3. Step 3: Cross multiply
    2,655.18x = 3,985.17 × 1,357.56
  4. Step 4: Simplify right side
    2,655.18x = 5,410,107.39
  5. Step 5: Solve for x
    x = 5,410,107.39/2,655.18
  6. Step 6: Final answer
    x = 2,037.57

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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.