Home / 3,953.80-5,456.33-2,275.75

Finding the Fourth Proportional to 3,953.80, 5,456.33 and 2,275.75

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Solution

The fourth proportional to 3,953.80, 5,456.33 and 2,275.75 is: 3,140.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.80 : 5,456.33 = 2,275.75 : x
  2. Step 2: Convert to fraction form
    3,953.80/5,456.33 = 2,275.75/x
  3. Step 3: Cross multiply
    3,953.80x = 5,456.33 × 2,275.75
  4. Step 4: Simplify right side
    3,953.80x = 12,417,243.00
  5. Step 5: Solve for x
    x = 12,417,243.00/3,953.80
  6. Step 6: Final answer
    x = 3,140.58

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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.