Home / 5,679.95-8,519.31-1,981.49

Finding the Fourth Proportional to 5,679.95, 8,519.31 and 1,981.49

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Solution

The fourth proportional to 5,679.95, 8,519.31 and 1,981.49 is: 2,972.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.95 : 8,519.31 = 1,981.49 : x
  2. Step 2: Convert to fraction form
    5,679.95/8,519.31 = 1,981.49/x
  3. Step 3: Cross multiply
    5,679.95x = 8,519.31 × 1,981.49
  4. Step 4: Simplify right side
    5,679.95x = 16,880,884.98
  5. Step 5: Solve for x
    x = 16,880,884.98/5,679.95
  6. Step 6: Final answer
    x = 2,972.02

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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.