Home / 8,515.36-12,772.72-2,672.16

Finding the Fourth Proportional to 8,515.36, 12,772.72 and 2,672.16

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Solution

The fourth proportional to 8,515.36, 12,772.72 and 2,672.16 is: 4,008.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.36 : 12,772.72 = 2,672.16 : x
  2. Step 2: Convert to fraction form
    8,515.36/12,772.72 = 2,672.16/x
  3. Step 3: Cross multiply
    8,515.36x = 12,772.72 × 2,672.16
  4. Step 4: Simplify right side
    8,515.36x = 34,130,751.48
  5. Step 5: Solve for x
    x = 34,130,751.48/8,515.36
  6. Step 6: Final answer
    x = 4,008.14

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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.