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Finding the Fourth Proportional to 4,998.70, 7,490.85 and 2,223.10

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Solution

The fourth proportional to 4,998.70, 7,490.85 and 2,223.10 is: 3,331.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,998.70 : 7,490.85 = 2,223.10 : x
  2. Step 2: Convert to fraction form
    4,998.70/7,490.85 = 2,223.10/x
  3. Step 3: Cross multiply
    4,998.70x = 7,490.85 × 2,223.10
  4. Step 4: Simplify right side
    4,998.70x = 16,652,908.64
  5. Step 5: Solve for x
    x = 16,652,908.64/4,998.70
  6. Step 6: Final answer
    x = 3,331.45

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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.