Home / 2,378.19-3,565.40-1,207.11

Finding the Fourth Proportional to 2,378.19, 3,565.40 and 1,207.11

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Solution

The fourth proportional to 2,378.19, 3,565.40 and 1,207.11 is: 1,809.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,378.19 : 3,565.40 = 1,207.11 : x
  2. Step 2: Convert to fraction form
    2,378.19/3,565.40 = 1,207.11/x
  3. Step 3: Cross multiply
    2,378.19x = 3,565.40 × 1,207.11
  4. Step 4: Simplify right side
    2,378.19x = 4,303,823.96
  5. Step 5: Solve for x
    x = 4,303,823.96/2,378.19
  6. Step 6: Final answer
    x = 1,809.71

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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.