Home / 1,560.12-2,340.72-1,318.92

Finding the Fourth Proportional to 1,560.12, 2,340.72 and 1,318.92

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Solution

The fourth proportional to 1,560.12, 2,340.72 and 1,318.92 is: 1,978.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560.12 : 2,340.72 = 1,318.92 : x
  2. Step 2: Convert to fraction form
    1,560.12/2,340.72 = 1,318.92/x
  3. Step 3: Cross multiply
    1,560.12x = 2,340.72 × 1,318.92
  4. Step 4: Simplify right side
    1,560.12x = 3,087,222.42
  5. Step 5: Solve for x
    x = 3,087,222.42/1,560.12
  6. Step 6: Final answer
    x = 1,978.84

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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.