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Finding the Fourth Proportional to 6,563.91, 9,040.10 and 5,679.39

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Solution

The fourth proportional to 6,563.91, 9,040.10 and 5,679.39 is: 7,821.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,563.91 : 9,040.10 = 5,679.39 : x
  2. Step 2: Convert to fraction form
    6,563.91/9,040.10 = 5,679.39/x
  3. Step 3: Cross multiply
    6,563.91x = 9,040.10 × 5,679.39
  4. Step 4: Simplify right side
    6,563.91x = 51,342,225.14
  5. Step 5: Solve for x
    x = 51,342,225.14/6,563.91
  6. Step 6: Final answer
    x = 7,821.90

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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.