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Finding the Fourth Proportional to 5,929.60, 8,899.80 and 5,108.80

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Solution

The fourth proportional to 5,929.60, 8,899.80 and 5,108.80 is: 7,667.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,929.60 : 8,899.80 = 5,108.80 : x
  2. Step 2: Convert to fraction form
    5,929.60/8,899.80 = 5,108.80/x
  3. Step 3: Cross multiply
    5,929.60x = 8,899.80 × 5,108.80
  4. Step 4: Simplify right side
    5,929.60x = 45,467,298.24
  5. Step 5: Solve for x
    x = 45,467,298.24/5,929.60
  6. Step 6: Final answer
    x = 7,667.85

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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.