Home / 1,302.12-1,957.86-1,200.65

Finding the Fourth Proportional to 1,302.12, 1,957.86 and 1,200.65

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Solution

The fourth proportional to 1,302.12, 1,957.86 and 1,200.65 is: 1,805.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302.12 : 1,957.86 = 1,200.65 : x
  2. Step 2: Convert to fraction form
    1,302.12/1,957.86 = 1,200.65/x
  3. Step 3: Cross multiply
    1,302.12x = 1,957.86 × 1,200.65
  4. Step 4: Simplify right side
    1,302.12x = 2,350,694.82
  5. Step 5: Solve for x
    x = 2,350,694.82/1,302.12
  6. Step 6: Final answer
    x = 1,805.28

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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.