Home / 2,687.12-4,037.08-1,715.12

Finding the Fourth Proportional to 2,687.12, 4,037.08 and 1,715.12

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Solution

The fourth proportional to 2,687.12, 4,037.08 and 1,715.12 is: 2,576.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.12 : 4,037.08 = 1,715.12 : x
  2. Step 2: Convert to fraction form
    2,687.12/4,037.08 = 1,715.12/x
  3. Step 3: Cross multiply
    2,687.12x = 4,037.08 × 1,715.12
  4. Step 4: Simplify right side
    2,687.12x = 6,924,076.65
  5. Step 5: Solve for x
    x = 6,924,076.65/2,687.12
  6. Step 6: Final answer
    x = 2,576.76

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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.