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Finding the Fourth Proportional to 7,801.60, 11,723.20 and 4,294.40

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Solution

The fourth proportional to 7,801.60, 11,723.20 and 4,294.40 is: 6,453.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,801.60 : 11,723.20 = 4,294.40 : x
  2. Step 2: Convert to fraction form
    7,801.60/11,723.20 = 4,294.40/x
  3. Step 3: Cross multiply
    7,801.60x = 11,723.20 × 4,294.40
  4. Step 4: Simplify right side
    7,801.60x = 50,344,110.08
  5. Step 5: Solve for x
    x = 50,344,110.08/7,801.60
  6. Step 6: Final answer
    x = 6,453.05

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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.