Home / 2,275.33-3,140.08-1,390.88

Finding the Fourth Proportional to 2,275.33, 3,140.08 and 1,390.88

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Solution

The fourth proportional to 2,275.33, 3,140.08 and 1,390.88 is: 1,919.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.33 : 3,140.08 = 1,390.88 : x
  2. Step 2: Convert to fraction form
    2,275.33/3,140.08 = 1,390.88/x
  3. Step 3: Cross multiply
    2,275.33x = 3,140.08 × 1,390.88
  4. Step 4: Simplify right side
    2,275.33x = 4,367,455.29
  5. Step 5: Solve for x
    x = 4,367,455.29/2,275.33
  6. Step 6: Final answer
    x = 1,919.48

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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.