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Finding the Fourth Proportional to 6,987.72, 10,523.18 and 6,302.28

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Solution

The fourth proportional to 6,987.72, 10,523.18 and 6,302.28 is: 9,490.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.72 : 10,523.18 = 6,302.28 : x
  2. Step 2: Convert to fraction form
    6,987.72/10,523.18 = 6,302.28/x
  3. Step 3: Cross multiply
    6,987.72x = 10,523.18 × 6,302.28
  4. Step 4: Simplify right side
    6,987.72x = 66,320,026.85
  5. Step 5: Solve for x
    x = 66,320,026.85/6,987.72
  6. Step 6: Final answer
    x = 9,490.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.