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Finding the Fourth Proportional to 6,647.78, 9,950.61 and 3,717.20

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Solution

The fourth proportional to 6,647.78, 9,950.61 and 3,717.20 is: 5,564.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,647.78 : 9,950.61 = 3,717.20 : x
  2. Step 2: Convert to fraction form
    6,647.78/9,950.61 = 3,717.20/x
  3. Step 3: Cross multiply
    6,647.78x = 9,950.61 × 3,717.20
  4. Step 4: Simplify right side
    6,647.78x = 36,988,407.49
  5. Step 5: Solve for x
    x = 36,988,407.49/6,647.78
  6. Step 6: Final answer
    x = 5,564.02

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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.