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Finding the Fourth Proportional to 7,967.61, 11,951.40 and 2,420.93

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Solution

The fourth proportional to 7,967.61, 11,951.40 and 2,420.93 is: 3,631.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,967.61 : 11,951.40 = 2,420.93 : x
  2. Step 2: Convert to fraction form
    7,967.61/11,951.40 = 2,420.93/x
  3. Step 3: Cross multiply
    7,967.61x = 11,951.40 × 2,420.93
  4. Step 4: Simplify right side
    7,967.61x = 28,933,430.94
  5. Step 5: Solve for x
    x = 28,933,430.94/7,967.61
  6. Step 6: Final answer
    x = 3,631.38

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Similar ratio
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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.