Home / 5,255.40-7,252.35-2,897.55

Finding the Fourth Proportional to 5,255.40, 7,252.35 and 2,897.55

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Solution

The fourth proportional to 5,255.40, 7,252.35 and 2,897.55 is: 3,998.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,255.40 : 7,252.35 = 2,897.55 : x
  2. Step 2: Convert to fraction form
    5,255.40/7,252.35 = 2,897.55/x
  3. Step 3: Cross multiply
    5,255.40x = 7,252.35 × 2,897.55
  4. Step 4: Simplify right side
    5,255.40x = 21,014,046.74
  5. Step 5: Solve for x
    x = 21,014,046.74/5,255.40
  6. Step 6: Final answer
    x = 3,998.56

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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.