Home / 1,298.44-1,793.28-1,007.20

Finding the Fourth Proportional to 1,298.44, 1,793.28 and 1,007.20

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Solution

The fourth proportional to 1,298.44, 1,793.28 and 1,007.20 is: 1,391.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298.44 : 1,793.28 = 1,007.20 : x
  2. Step 2: Convert to fraction form
    1,298.44/1,793.28 = 1,007.20/x
  3. Step 3: Cross multiply
    1,298.44x = 1,793.28 × 1,007.20
  4. Step 4: Simplify right side
    1,298.44x = 1,806,191.62
  5. Step 5: Solve for x
    x = 1,806,191.62/1,298.44
  6. Step 6: Final answer
    x = 1,391.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.