Home / 2,295.71-3,168.05-1,247.78

Finding the Fourth Proportional to 2,295.71, 3,168.05 and 1,247.78

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Solution

The fourth proportional to 2,295.71, 3,168.05 and 1,247.78 is: 1,721.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,295.71 : 3,168.05 = 1,247.78 : x
  2. Step 2: Convert to fraction form
    2,295.71/3,168.05 = 1,247.78/x
  3. Step 3: Cross multiply
    2,295.71x = 3,168.05 × 1,247.78
  4. Step 4: Simplify right side
    2,295.71x = 3,953,007.35
  5. Step 5: Solve for x
    x = 3,953,007.35/2,295.71
  6. Step 6: Final answer
    x = 1,721.91

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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.