Home / 5,247.91-7,871.87-1,785.16

Finding the Fourth Proportional to 5,247.91, 7,871.87 and 1,785.16

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Solution

The fourth proportional to 5,247.91, 7,871.87 and 1,785.16 is: 2,677.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.91 : 7,871.87 = 1,785.16 : x
  2. Step 2: Convert to fraction form
    5,247.91/7,871.87 = 1,785.16/x
  3. Step 3: Cross multiply
    5,247.91x = 7,871.87 × 1,785.16
  4. Step 4: Simplify right side
    5,247.91x = 14,052,581.38
  5. Step 5: Solve for x
    x = 14,052,581.38/5,247.91
  6. Step 6: Final answer
    x = 2,677.75

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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.