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Finding the Fourth Proportional to 6,993.48, 9,642.04 and 5,729.88

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Solution

The fourth proportional to 6,993.48, 9,642.04 and 5,729.88 is: 7,899.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,993.48 : 9,642.04 = 5,729.88 : x
  2. Step 2: Convert to fraction form
    6,993.48/9,642.04 = 5,729.88/x
  3. Step 3: Cross multiply
    6,993.48x = 9,642.04 × 5,729.88
  4. Step 4: Simplify right side
    6,993.48x = 55,247,732.16
  5. Step 5: Solve for x
    x = 55,247,732.16/6,993.48
  6. Step 6: Final answer
    x = 7,899.89

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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.