Home / 8,391.23-11,581.57-6,398.22

Finding the Fourth Proportional to 8,391.23, 11,581.57 and 6,398.22

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Solution

The fourth proportional to 8,391.23, 11,581.57 and 6,398.22 is: 8,830.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.23 : 11,581.57 = 6,398.22 : x
  2. Step 2: Convert to fraction form
    8,391.23/11,581.57 = 6,398.22/x
  3. Step 3: Cross multiply
    8,391.23x = 11,581.57 × 6,398.22
  4. Step 4: Simplify right side
    8,391.23x = 74,101,400.81
  5. Step 5: Solve for x
    x = 74,101,400.81/8,391.23
  6. Step 6: Final answer
    x = 8,830.82

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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.