Home / 3,555.95-5,331.36-1,680.80

Finding the Fourth Proportional to 3,555.95, 5,331.36 and 1,680.80

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Solution

The fourth proportional to 3,555.95, 5,331.36 and 1,680.80 is: 2,519.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,555.95 : 5,331.36 = 1,680.80 : x
  2. Step 2: Convert to fraction form
    3,555.95/5,331.36 = 1,680.80/x
  3. Step 3: Cross multiply
    3,555.95x = 5,331.36 × 1,680.80
  4. Step 4: Simplify right side
    3,555.95x = 8,960,923.23
  5. Step 5: Solve for x
    x = 8,960,923.23/3,555.95
  6. Step 6: Final answer
    x = 2,519.98

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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.