Home / 8,471.28-11,686.43-5,488.12

Finding the Fourth Proportional to 8,471.28, 11,686.43 and 5,488.12

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Solution

The fourth proportional to 8,471.28, 11,686.43 and 5,488.12 is: 7,571.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,471.28 : 11,686.43 = 5,488.12 : x
  2. Step 2: Convert to fraction form
    8,471.28/11,686.43 = 5,488.12/x
  3. Step 3: Cross multiply
    8,471.28x = 11,686.43 × 5,488.12
  4. Step 4: Simplify right side
    8,471.28x = 64,136,530.21
  5. Step 5: Solve for x
    x = 64,136,530.21/8,471.28
  6. Step 6: Final answer
    x = 7,571.06

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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.