Home / 2,275.53-3,140.31-1,379.56

Finding the Fourth Proportional to 2,275.53, 3,140.31 and 1,379.56

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Solution

The fourth proportional to 2,275.53, 3,140.31 and 1,379.56 is: 1,903.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.53 : 3,140.31 = 1,379.56 : x
  2. Step 2: Convert to fraction form
    2,275.53/3,140.31 = 1,379.56/x
  3. Step 3: Cross multiply
    2,275.53x = 3,140.31 × 1,379.56
  4. Step 4: Simplify right side
    2,275.53x = 4,332,246.06
  5. Step 5: Solve for x
    x = 4,332,246.06/2,275.53
  6. Step 6: Final answer
    x = 1,903.84

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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.