Home / 5,479.91-7,562.13-3,122.81

Finding the Fourth Proportional to 5,479.91, 7,562.13 and 3,122.81

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Solution

The fourth proportional to 5,479.91, 7,562.13 and 3,122.81 is: 4,309.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.91 : 7,562.13 = 3,122.81 : x
  2. Step 2: Convert to fraction form
    5,479.91/7,562.13 = 3,122.81/x
  3. Step 3: Cross multiply
    5,479.91x = 7,562.13 × 3,122.81
  4. Step 4: Simplify right side
    5,479.91x = 23,615,095.19
  5. Step 5: Solve for x
    x = 23,615,095.19/5,479.91
  6. Step 6: Final answer
    x = 4,309.39

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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.