Home / 5,255.15-7,252.53-2,897.69

Finding the Fourth Proportional to 5,255.15, 7,252.53 and 2,897.69

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Solution

The fourth proportional to 5,255.15, 7,252.53 and 2,897.69 is: 3,999.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,255.15 : 7,252.53 = 2,897.69 : x
  2. Step 2: Convert to fraction form
    5,255.15/7,252.53 = 2,897.69/x
  3. Step 3: Cross multiply
    5,255.15x = 7,252.53 × 2,897.69
  4. Step 4: Simplify right side
    5,255.15x = 21,015,583.66
  5. Step 5: Solve for x
    x = 21,015,583.66/5,255.15
  6. Step 6: Final answer
    x = 3,999.05

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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.