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Finding the Fourth Proportional to 7,789, 10,748.42 and 4,251.54

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Solution

The fourth proportional to 7,789, 10,748.42 and 4,251.54 is: 5,866.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789 : 10,748.42 = 4,251.54 : x
  2. Step 2: Convert to fraction form
    7,789/10,748.42 = 4,251.54/x
  3. Step 3: Cross multiply
    7,789x = 10,748.42 × 4,251.54
  4. Step 4: Simplify right side
    7,789x = 45,697,337.57
  5. Step 5: Solve for x
    x = 45,697,337.57/7,789
  6. Step 6: Final answer
    x = 5,866.91

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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.