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Finding the Fourth Proportional to 3,125.52, 4,313.12 and 1,866.92

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Solution

The fourth proportional to 3,125.52, 4,313.12 and 1,866.92 is: 2,576.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.52 : 4,313.12 = 1,866.92 : x
  2. Step 2: Convert to fraction form
    3,125.52/4,313.12 = 1,866.92/x
  3. Step 3: Cross multiply
    3,125.52x = 4,313.12 × 1,866.92
  4. Step 4: Simplify right side
    3,125.52x = 8,052,219.09
  5. Step 5: Solve for x
    x = 8,052,219.09/3,125.52
  6. Step 6: Final answer
    x = 2,576.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.