Home / 2,378.40-3,568.22-1,146.40

Finding the Fourth Proportional to 2,378.40, 3,568.22 and 1,146.40

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Solution

The fourth proportional to 2,378.40, 3,568.22 and 1,146.40 is: 1,719.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,378.40 : 3,568.22 = 1,146.40 : x
  2. Step 2: Convert to fraction form
    2,378.40/3,568.22 = 1,146.40/x
  3. Step 3: Cross multiply
    2,378.40x = 3,568.22 × 1,146.40
  4. Step 4: Simplify right side
    2,378.40x = 4,090,607.41
  5. Step 5: Solve for x
    x = 4,090,607.41/2,378.40
  6. Step 6: Final answer
    x = 1,719.90

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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.