Home / 5,490.72-8,237.57-1,981.13

Finding the Fourth Proportional to 5,490.72, 8,237.57 and 1,981.13

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Solution

The fourth proportional to 5,490.72, 8,237.57 and 1,981.13 is: 2,972.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.72 : 8,237.57 = 1,981.13 : x
  2. Step 2: Convert to fraction form
    5,490.72/8,237.57 = 1,981.13/x
  3. Step 3: Cross multiply
    5,490.72x = 8,237.57 × 1,981.13
  4. Step 4: Simplify right side
    5,490.72x = 16,319,645.96
  5. Step 5: Solve for x
    x = 16,319,645.96/5,490.72
  6. Step 6: Final answer
    x = 2,972.22

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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.