Home / 4,478.40-6,718.64-2,631.04

Finding the Fourth Proportional to 4,478.40, 6,718.64 and 2,631.04

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Solution

The fourth proportional to 4,478.40, 6,718.64 and 2,631.04 is: 3,947.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,478.40 : 6,718.64 = 2,631.04 : x
  2. Step 2: Convert to fraction form
    4,478.40/6,718.64 = 2,631.04/x
  3. Step 3: Cross multiply
    4,478.40x = 6,718.64 × 2,631.04
  4. Step 4: Simplify right side
    4,478.40x = 17,677,010.59
  5. Step 5: Solve for x
    x = 17,677,010.59/4,478.40
  6. Step 6: Final answer
    x = 3,947.17

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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.