Home / 2,275.81-3,140.42-1,267.44

Finding the Fourth Proportional to 2,275.81, 3,140.42 and 1,267.44

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Solution

The fourth proportional to 2,275.81, 3,140.42 and 1,267.44 is: 1,748.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.81 : 3,140.42 = 1,267.44 : x
  2. Step 2: Convert to fraction form
    2,275.81/3,140.42 = 1,267.44/x
  3. Step 3: Cross multiply
    2,275.81x = 3,140.42 × 1,267.44
  4. Step 4: Simplify right side
    2,275.81x = 3,980,301.78
  5. Step 5: Solve for x
    x = 3,980,301.78/2,275.81
  6. Step 6: Final answer
    x = 1,748.96

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1.5x scale

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.