Home / 1,441.80-2,158.65-1,279.80

Finding the Fourth Proportional to 1,441.80, 2,158.65 and 1,279.80

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Solution

The fourth proportional to 1,441.80, 2,158.65 and 1,279.80 is: 1,916.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,441.80 : 2,158.65 = 1,279.80 : x
  2. Step 2: Convert to fraction form
    1,441.80/2,158.65 = 1,279.80/x
  3. Step 3: Cross multiply
    1,441.80x = 2,158.65 × 1,279.80
  4. Step 4: Simplify right side
    1,441.80x = 2,762,640.27
  5. Step 5: Solve for x
    x = 2,762,640.27/1,441.80
  6. Step 6: Final answer
    x = 1,916.11

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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.