Home / 3,518.91-4,856.13-1,947

Finding the Fourth Proportional to 3,518.91, 4,856.13 and 1,947

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Solution

The fourth proportional to 3,518.91, 4,856.13 and 1,947 is: 2,686.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.91 : 4,856.13 = 1,947 : x
  2. Step 2: Convert to fraction form
    3,518.91/4,856.13 = 1,947/x
  3. Step 3: Cross multiply
    3,518.91x = 4,856.13 × 1,947
  4. Step 4: Simplify right side
    3,518.91x = 9,454,885.11
  5. Step 5: Solve for x
    x = 9,454,885.11/3,518.91
  6. Step 6: Final answer
    x = 2,686.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.