Home / 2,271.13-3,132.54-1,387.42

Finding the Fourth Proportional to 2,271.13, 3,132.54 and 1,387.42

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Solution

The fourth proportional to 2,271.13, 3,132.54 and 1,387.42 is: 1,913.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,271.13 : 3,132.54 = 1,387.42 : x
  2. Step 2: Convert to fraction form
    2,271.13/3,132.54 = 1,387.42/x
  3. Step 3: Cross multiply
    2,271.13x = 3,132.54 × 1,387.42
  4. Step 4: Simplify right side
    2,271.13x = 4,346,148.65
  5. Step 5: Solve for x
    x = 4,346,148.65/2,271.13
  6. Step 6: Final answer
    x = 1,913.65

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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.