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Finding the Fourth Proportional to 5,910.78, 8,866.05 and 1,806.78

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Solution

The fourth proportional to 5,910.78, 8,866.05 and 1,806.78 is: 2,710.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,910.78 : 8,866.05 = 1,806.78 : x
  2. Step 2: Convert to fraction form
    5,910.78/8,866.05 = 1,806.78/x
  3. Step 3: Cross multiply
    5,910.78x = 8,866.05 × 1,806.78
  4. Step 4: Simplify right side
    5,910.78x = 16,019,001.82
  5. Step 5: Solve for x
    x = 16,019,001.82/5,910.78
  6. Step 6: Final answer
    x = 2,710.13

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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.