Home / 2,118.59-3,177.30-885.80

Finding the Fourth Proportional to 2,118.59, 3,177.30 and 885.80

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Solution

The fourth proportional to 2,118.59, 3,177.30 and 885.80 is: 1,328.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.59 : 3,177.30 = 885.80 : x
  2. Step 2: Convert to fraction form
    2,118.59/3,177.30 = 885.80/x
  3. Step 3: Cross multiply
    2,118.59x = 3,177.30 × 885.80
  4. Step 4: Simplify right side
    2,118.59x = 2,814,436.45
  5. Step 5: Solve for x
    x = 2,814,436.45/2,118.59
  6. Step 6: Final answer
    x = 1,328.45

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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.