Home / 7,812.12-11,721.42-4,117.08

Finding the Fourth Proportional to 7,812.12, 11,721.42 and 4,117.08

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Solution

The fourth proportional to 7,812.12, 11,721.42 and 4,117.08 is: 6,177.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.12 : 11,721.42 = 4,117.08 : x
  2. Step 2: Convert to fraction form
    7,812.12/11,721.42 = 4,117.08/x
  3. Step 3: Cross multiply
    7,812.12x = 11,721.42 × 4,117.08
  4. Step 4: Simplify right side
    7,812.12x = 48,258,023.85
  5. Step 5: Solve for x
    x = 48,258,023.85/7,812.12
  6. Step 6: Final answer
    x = 6,177.33

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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.