Home / 2,715.30-4,072.14-2,168.55

Finding the Fourth Proportional to 2,715.30, 4,072.14 and 2,168.55

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Solution

The fourth proportional to 2,715.30, 4,072.14 and 2,168.55 is: 3,252.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.30 : 4,072.14 = 2,168.55 : x
  2. Step 2: Convert to fraction form
    2,715.30/4,072.14 = 2,168.55/x
  3. Step 3: Cross multiply
    2,715.30x = 4,072.14 × 2,168.55
  4. Step 4: Simplify right side
    2,715.30x = 8,830,639.20
  5. Step 5: Solve for x
    x = 8,830,639.20/2,715.30
  6. Step 6: Final answer
    x = 3,252.18

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1.5x scale

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.