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Finding the Fourth Proportional to 6,900.44, 9,520.51 and 3,915.49

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Solution

The fourth proportional to 6,900.44, 9,520.51 and 3,915.49 is: 5,402.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,900.44 : 9,520.51 = 3,915.49 : x
  2. Step 2: Convert to fraction form
    6,900.44/9,520.51 = 3,915.49/x
  3. Step 3: Cross multiply
    6,900.44x = 9,520.51 × 3,915.49
  4. Step 4: Simplify right side
    6,900.44x = 37,277,464.31
  5. Step 5: Solve for x
    x = 37,277,464.31/6,900.44
  6. Step 6: Final answer
    x = 5,402.19

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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.