Home / 7,886.39-11,812.62-3,720.15

Finding the Fourth Proportional to 7,886.39, 11,812.62 and 3,720.15

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Solution

The fourth proportional to 7,886.39, 11,812.62 and 3,720.15 is: 5,572.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,886.39 : 11,812.62 = 3,720.15 : x
  2. Step 2: Convert to fraction form
    7,886.39/11,812.62 = 3,720.15/x
  3. Step 3: Cross multiply
    7,886.39x = 11,812.62 × 3,720.15
  4. Step 4: Simplify right side
    7,886.39x = 43,944,704.34
  5. Step 5: Solve for x
    x = 43,944,704.34/7,886.39
  6. Step 6: Final answer
    x = 5,572.22

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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.