Home / 8,439.01-11,634.91-5,781.67

Finding the Fourth Proportional to 8,439.01, 11,634.91 and 5,781.67

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Solution

The fourth proportional to 8,439.01, 11,634.91 and 5,781.67 is: 7,971.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.01 : 11,634.91 = 5,781.67 : x
  2. Step 2: Convert to fraction form
    8,439.01/11,634.91 = 5,781.67/x
  3. Step 3: Cross multiply
    8,439.01x = 11,634.91 × 5,781.67
  4. Step 4: Simplify right side
    8,439.01x = 67,269,210.10
  5. Step 5: Solve for x
    x = 67,269,210.10/8,439.01
  6. Step 6: Final answer
    x = 7,971.22

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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.