Home / 2,275.48-3,412.14-1,178.74

Finding the Fourth Proportional to 2,275.48, 3,412.14 and 1,178.74

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Solution

The fourth proportional to 2,275.48, 3,412.14 and 1,178.74 is: 1,767.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.48 : 3,412.14 = 1,178.74 : x
  2. Step 2: Convert to fraction form
    2,275.48/3,412.14 = 1,178.74/x
  3. Step 3: Cross multiply
    2,275.48x = 3,412.14 × 1,178.74
  4. Step 4: Simplify right side
    2,275.48x = 4,022,025.90
  5. Step 5: Solve for x
    x = 4,022,025.90/2,275.48
  6. Step 6: Final answer
    x = 1,767.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.