Home / 2,435.80-3,647.20-1,279.12

Finding the Fourth Proportional to 2,435.80, 3,647.20 and 1,279.12

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Solution

The fourth proportional to 2,435.80, 3,647.20 and 1,279.12 is: 1,915.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,435.80 : 3,647.20 = 1,279.12 : x
  2. Step 2: Convert to fraction form
    2,435.80/3,647.20 = 1,279.12/x
  3. Step 3: Cross multiply
    2,435.80x = 3,647.20 × 1,279.12
  4. Step 4: Simplify right side
    2,435.80x = 4,665,206.46
  5. Step 5: Solve for x
    x = 4,665,206.46/2,435.80
  6. Step 6: Final answer
    x = 1,915.27

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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.