Home / 3,378.77-5,061.18-2,989.77

Finding the Fourth Proportional to 3,378.77, 5,061.18 and 2,989.77

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Solution

The fourth proportional to 3,378.77, 5,061.18 and 2,989.77 is: 4,478.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.77 : 5,061.18 = 2,989.77 : x
  2. Step 2: Convert to fraction form
    3,378.77/5,061.18 = 2,989.77/x
  3. Step 3: Cross multiply
    3,378.77x = 5,061.18 × 2,989.77
  4. Step 4: Simplify right side
    3,378.77x = 15,131,764.13
  5. Step 5: Solve for x
    x = 15,131,764.13/3,378.77
  6. Step 6: Final answer
    x = 4,478.49

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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.