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Finding the Fourth Proportional to 9,397.84, 12,968.98 and 5,418.92

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Solution

The fourth proportional to 9,397.84, 12,968.98 and 5,418.92 is: 7,478.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,397.84 : 12,968.98 = 5,418.92 : x
  2. Step 2: Convert to fraction form
    9,397.84/12,968.98 = 5,418.92/x
  3. Step 3: Cross multiply
    9,397.84x = 12,968.98 × 5,418.92
  4. Step 4: Simplify right side
    9,397.84x = 70,277,865.10
  5. Step 5: Solve for x
    x = 70,277,865.10/9,397.84
  6. Step 6: Final answer
    x = 7,478.09

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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.