Home / 8,431.76-11,632.20-5,287.34

Finding the Fourth Proportional to 8,431.76, 11,632.20 and 5,287.34

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Solution

The fourth proportional to 8,431.76, 11,632.20 and 5,287.34 is: 7,294.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.76 : 11,632.20 = 5,287.34 : x
  2. Step 2: Convert to fraction form
    8,431.76/11,632.20 = 5,287.34/x
  3. Step 3: Cross multiply
    8,431.76x = 11,632.20 × 5,287.34
  4. Step 4: Simplify right side
    8,431.76x = 61,503,396.35
  5. Step 5: Solve for x
    x = 61,503,396.35/8,431.76
  6. Step 6: Final answer
    x = 7,294.25

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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.