Home / 1,306.48-1,798.86-1,109.56

Finding the Fourth Proportional to 1,306.48, 1,798.86 and 1,109.56

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Solution

The fourth proportional to 1,306.48, 1,798.86 and 1,109.56 is: 1,527.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306.48 : 1,798.86 = 1,109.56 : x
  2. Step 2: Convert to fraction form
    1,306.48/1,798.86 = 1,109.56/x
  3. Step 3: Cross multiply
    1,306.48x = 1,798.86 × 1,109.56
  4. Step 4: Simplify right side
    1,306.48x = 1,995,943.10
  5. Step 5: Solve for x
    x = 1,995,943.10/1,306.48
  6. Step 6: Final answer
    x = 1,527.73

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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.