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Finding the Fourth Proportional to 7,800.69, 11,695.56 and 2,869.70

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Solution

The fourth proportional to 7,800.69, 11,695.56 and 2,869.70 is: 4,302.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,800.69 : 11,695.56 = 2,869.70 : x
  2. Step 2: Convert to fraction form
    7,800.69/11,695.56 = 2,869.70/x
  3. Step 3: Cross multiply
    7,800.69x = 11,695.56 × 2,869.70
  4. Step 4: Simplify right side
    7,800.69x = 33,562,690.05
  5. Step 5: Solve for x
    x = 33,562,690.05/7,800.69
  6. Step 6: Final answer
    x = 4,302.53

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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.