Home / 2,625.30-3,937.70-981.06

Finding the Fourth Proportional to 2,625.30, 3,937.70 and 981.06

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Solution

The fourth proportional to 2,625.30, 3,937.70 and 981.06 is: 1,471.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,625.30 : 3,937.70 = 981.06 : x
  2. Step 2: Convert to fraction form
    2,625.30/3,937.70 = 981.06/x
  3. Step 3: Cross multiply
    2,625.30x = 3,937.70 × 981.06
  4. Step 4: Simplify right side
    2,625.30x = 3,863,115.06
  5. Step 5: Solve for x
    x = 3,863,115.06/2,625.30
  6. Step 6: Final answer
    x = 1,471.49

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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.