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Finding the Fourth Proportional to 4,375.60, 6,560.99 and 2,990.50

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Solution

The fourth proportional to 4,375.60, 6,560.99 and 2,990.50 is: 4,484.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,375.60 : 6,560.99 = 2,990.50 : x
  2. Step 2: Convert to fraction form
    4,375.60/6,560.99 = 2,990.50/x
  3. Step 3: Cross multiply
    4,375.60x = 6,560.99 × 2,990.50
  4. Step 4: Simplify right side
    4,375.60x = 19,620,640.60
  5. Step 5: Solve for x
    x = 19,620,640.60/4,375.60
  6. Step 6: Final answer
    x = 4,484.10

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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.