Home / 5,439.64-8,159.49-1,976.80

Finding the Fourth Proportional to 5,439.64, 8,159.49 and 1,976.80

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Solution

The fourth proportional to 5,439.64, 8,159.49 and 1,976.80 is: 2,965.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.64 : 8,159.49 = 1,976.80 : x
  2. Step 2: Convert to fraction form
    5,439.64/8,159.49 = 1,976.80/x
  3. Step 3: Cross multiply
    5,439.64x = 8,159.49 × 1,976.80
  4. Step 4: Simplify right side
    5,439.64x = 16,129,679.83
  5. Step 5: Solve for x
    x = 16,129,679.83/5,439.64
  6. Step 6: Final answer
    x = 2,965.21

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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.