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Finding the Fourth Proportional to 6,379.40, 9,572.79 and 2,681.30

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Solution

The fourth proportional to 6,379.40, 9,572.79 and 2,681.30 is: 4,023.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,379.40 : 9,572.79 = 2,681.30 : x
  2. Step 2: Convert to fraction form
    6,379.40/9,572.79 = 2,681.30/x
  3. Step 3: Cross multiply
    6,379.40x = 9,572.79 × 2,681.30
  4. Step 4: Simplify right side
    6,379.40x = 25,667,521.83
  5. Step 5: Solve for x
    x = 25,667,521.83/6,379.40
  6. Step 6: Final answer
    x = 4,023.50

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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.