Home / 8,311.35-11,471.59-5,479.23

Finding the Fourth Proportional to 8,311.35, 11,471.59 and 5,479.23

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Solution

The fourth proportional to 8,311.35, 11,471.59 and 5,479.23 is: 7,562.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,311.35 : 11,471.59 = 5,479.23 : x
  2. Step 2: Convert to fraction form
    8,311.35/11,471.59 = 5,479.23/x
  3. Step 3: Cross multiply
    8,311.35x = 11,471.59 × 5,479.23
  4. Step 4: Simplify right side
    8,311.35x = 62,855,482.86
  5. Step 5: Solve for x
    x = 62,855,482.86/8,311.35
  6. Step 6: Final answer
    x = 7,562.60

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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.