Home / 1,568.20-2,348.66-919.39

Finding the Fourth Proportional to 1,568.20, 2,348.66 and 919.39

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Solution

The fourth proportional to 1,568.20, 2,348.66 and 919.39 is: 1,376.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,568.20 : 2,348.66 = 919.39 : x
  2. Step 2: Convert to fraction form
    1,568.20/2,348.66 = 919.39/x
  3. Step 3: Cross multiply
    1,568.20x = 2,348.66 × 919.39
  4. Step 4: Simplify right side
    1,568.20x = 2,159,334.52
  5. Step 5: Solve for x
    x = 2,159,334.52/1,568.20
  6. Step 6: Final answer
    x = 1,376.95

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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.