Home / 7,743.75-11,615.49-2,478.72

Finding the Fourth Proportional to 7,743.75, 11,615.49 and 2,478.72

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Solution

The fourth proportional to 7,743.75, 11,615.49 and 2,478.72 is: 3,718.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,743.75 : 11,615.49 = 2,478.72 : x
  2. Step 2: Convert to fraction form
    7,743.75/11,615.49 = 2,478.72/x
  3. Step 3: Cross multiply
    7,743.75x = 11,615.49 × 2,478.72
  4. Step 4: Simplify right side
    7,743.75x = 28,791,547.37
  5. Step 5: Solve for x
    x = 28,791,547.37/7,743.75
  6. Step 6: Final answer
    x = 3,718.04

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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.