Home / 2,625.20-3,937.84-1,326.72

Finding the Fourth Proportional to 2,625.20, 3,937.84 and 1,326.72

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Solution

The fourth proportional to 2,625.20, 3,937.84 and 1,326.72 is: 1,990.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,625.20 : 3,937.84 = 1,326.72 : x
  2. Step 2: Convert to fraction form
    2,625.20/3,937.84 = 1,326.72/x
  3. Step 3: Cross multiply
    2,625.20x = 3,937.84 × 1,326.72
  4. Step 4: Simplify right side
    2,625.20x = 5,224,411.08
  5. Step 5: Solve for x
    x = 5,224,411.08/2,625.20
  6. Step 6: Final answer
    x = 1,990.10

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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.