Home / 4,278.40-6,417.94-1,647.18

Finding the Fourth Proportional to 4,278.40, 6,417.94 and 1,647.18

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Solution

The fourth proportional to 4,278.40, 6,417.94 and 1,647.18 is: 2,470.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,278.40 : 6,417.94 = 1,647.18 : x
  2. Step 2: Convert to fraction form
    4,278.40/6,417.94 = 1,647.18/x
  3. Step 3: Cross multiply
    4,278.40x = 6,417.94 × 1,647.18
  4. Step 4: Simplify right side
    4,278.40x = 10,571,502.41
  5. Step 5: Solve for x
    x = 10,571,502.41/4,278.40
  6. Step 6: Final answer
    x = 2,470.90

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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.