Home / 7,221.48-10,831.12-4,446.72

Finding the Fourth Proportional to 7,221.48, 10,831.12 and 4,446.72

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Solution

The fourth proportional to 7,221.48, 10,831.12 and 4,446.72 is: 6,669.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.48 : 10,831.12 = 4,446.72 : x
  2. Step 2: Convert to fraction form
    7,221.48/10,831.12 = 4,446.72/x
  3. Step 3: Cross multiply
    7,221.48x = 10,831.12 × 4,446.72
  4. Step 4: Simplify right side
    7,221.48x = 48,162,957.93
  5. Step 5: Solve for x
    x = 48,162,957.93/7,221.48
  6. Step 6: Final answer
    x = 6,669.40

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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.