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Finding the Fourth Proportional to 9,398.33, 12,971.07 and 5,418.66

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Solution

The fourth proportional to 9,398.33, 12,971.07 and 5,418.66 is: 7,478.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,398.33 : 12,971.07 = 5,418.66 : x
  2. Step 2: Convert to fraction form
    9,398.33/12,971.07 = 5,418.66/x
  3. Step 3: Cross multiply
    9,398.33x = 12,971.07 × 5,418.66
  4. Step 4: Simplify right side
    9,398.33x = 70,285,818.17
  5. Step 5: Solve for x
    x = 70,285,818.17/9,398.33
  6. Step 6: Final answer
    x = 7,478.55

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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.