Home / 1,318.07-1,976.95-537.28

Finding the Fourth Proportional to 1,318.07, 1,976.95 and 537.28

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Solution

The fourth proportional to 1,318.07, 1,976.95 and 537.28 is: 805.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.07 : 1,976.95 = 537.28 : x
  2. Step 2: Convert to fraction form
    1,318.07/1,976.95 = 537.28/x
  3. Step 3: Cross multiply
    1,318.07x = 1,976.95 × 537.28
  4. Step 4: Simplify right side
    1,318.07x = 1,062,163.12
  5. Step 5: Solve for x
    x = 1,062,163.12/1,318.07
  6. Step 6: Final answer
    x = 805.85

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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.