Home / 7,217.91-10,831.52-4,990.21

Finding the Fourth Proportional to 7,217.91, 10,831.52 and 4,990.21

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Solution

The fourth proportional to 7,217.91, 10,831.52 and 4,990.21 is: 7,488.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,217.91 : 10,831.52 = 4,990.21 : x
  2. Step 2: Convert to fraction form
    7,217.91/10,831.52 = 4,990.21/x
  3. Step 3: Cross multiply
    7,217.91x = 10,831.52 × 4,990.21
  4. Step 4: Simplify right side
    7,217.91x = 54,051,544.82
  5. Step 5: Solve for x
    x = 54,051,544.82/7,217.91
  6. Step 6: Final answer
    x = 7,488.53

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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.