Home / 8,113.72-11,190.54-5,318.68

Finding the Fourth Proportional to 8,113.72, 11,190.54 and 5,318.68

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Solution

The fourth proportional to 8,113.72, 11,190.54 and 5,318.68 is: 7,335.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,113.72 : 11,190.54 = 5,318.68 : x
  2. Step 2: Convert to fraction form
    8,113.72/11,190.54 = 5,318.68/x
  3. Step 3: Cross multiply
    8,113.72x = 11,190.54 × 5,318.68
  4. Step 4: Simplify right side
    8,113.72x = 59,518,901.29
  5. Step 5: Solve for x
    x = 59,518,901.29/8,113.72
  6. Step 6: Final answer
    x = 7,335.59

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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.