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Finding the Fourth Proportional to 6,986.72, 10,480.08 and 4,391.48

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Solution

The fourth proportional to 6,986.72, 10,480.08 and 4,391.48 is: 6,587.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,986.72 : 10,480.08 = 4,391.48 : x
  2. Step 2: Convert to fraction form
    6,986.72/10,480.08 = 4,391.48/x
  3. Step 3: Cross multiply
    6,986.72x = 10,480.08 × 4,391.48
  4. Step 4: Simplify right side
    6,986.72x = 46,023,061.72
  5. Step 5: Solve for x
    x = 46,023,061.72/6,986.72
  6. Step 6: Final answer
    x = 6,587.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.