Home / 2,379.19-3,565.80-1,209.49

Finding the Fourth Proportional to 2,379.19, 3,565.80 and 1,209.49

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Solution

The fourth proportional to 2,379.19, 3,565.80 and 1,209.49 is: 1,812.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.19 : 3,565.80 = 1,209.49 : x
  2. Step 2: Convert to fraction form
    2,379.19/3,565.80 = 1,209.49/x
  3. Step 3: Cross multiply
    2,379.19x = 3,565.80 × 1,209.49
  4. Step 4: Simplify right side
    2,379.19x = 4,312,799.44
  5. Step 5: Solve for x
    x = 4,312,799.44/2,379.19
  6. Step 6: Final answer
    x = 1,812.72

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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.