Home / 8,901.44-13,350.34-2,978.78

Finding the Fourth Proportional to 8,901.44, 13,350.34 and 2,978.78

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Solution

The fourth proportional to 8,901.44, 13,350.34 and 2,978.78 is: 4,467.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,901.44 : 13,350.34 = 2,978.78 : x
  2. Step 2: Convert to fraction form
    8,901.44/13,350.34 = 2,978.78/x
  3. Step 3: Cross multiply
    8,901.44x = 13,350.34 × 2,978.78
  4. Step 4: Simplify right side
    8,901.44x = 39,767,671.13
  5. Step 5: Solve for x
    x = 39,767,671.13/8,901.44
  6. Step 6: Final answer
    x = 4,467.55

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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.