Home / 2,715.16-4,071.28-959.80

Finding the Fourth Proportional to 2,715.16, 4,071.28 and 959.80

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Solution

The fourth proportional to 2,715.16, 4,071.28 and 959.80 is: 1,439.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.16 : 4,071.28 = 959.80 : x
  2. Step 2: Convert to fraction form
    2,715.16/4,071.28 = 959.80/x
  3. Step 3: Cross multiply
    2,715.16x = 4,071.28 × 959.80
  4. Step 4: Simplify right side
    2,715.16x = 3,907,614.54
  5. Step 5: Solve for x
    x = 3,907,614.54/2,715.16
  6. Step 6: Final answer
    x = 1,439.18

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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.