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Finding the Fourth Proportional to 5,575.40, 8,363.10 and 4,905.80

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Solution

The fourth proportional to 5,575.40, 8,363.10 and 4,905.80 is: 7,358.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,575.40 : 8,363.10 = 4,905.80 : x
  2. Step 2: Convert to fraction form
    5,575.40/8,363.10 = 4,905.80/x
  3. Step 3: Cross multiply
    5,575.40x = 8,363.10 × 4,905.80
  4. Step 4: Simplify right side
    5,575.40x = 41,027,695.98
  5. Step 5: Solve for x
    x = 41,027,695.98/5,575.40
  6. Step 6: Final answer
    x = 7,358.70

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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.