Home / 2,838.13-4,257.71-1,278.17

Finding the Fourth Proportional to 2,838.13, 4,257.71 and 1,278.17

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Solution

The fourth proportional to 2,838.13, 4,257.71 and 1,278.17 is: 1,917.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,838.13 : 4,257.71 = 1,278.17 : x
  2. Step 2: Convert to fraction form
    2,838.13/4,257.71 = 1,278.17/x
  3. Step 3: Cross multiply
    2,838.13x = 4,257.71 × 1,278.17
  4. Step 4: Simplify right side
    2,838.13x = 5,442,077.19
  5. Step 5: Solve for x
    x = 5,442,077.19/2,838.13
  6. Step 6: Final answer
    x = 1,917.49

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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.