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Finding the Fourth Proportional to 1,818.19, 2,728.48 and 997.05

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Solution

The fourth proportional to 1,818.19, 2,728.48 and 997.05 is: 1,496.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.19 : 2,728.48 = 997.05 : x
  2. Step 2: Convert to fraction form
    1,818.19/2,728.48 = 997.05/x
  3. Step 3: Cross multiply
    1,818.19x = 2,728.48 × 997.05
  4. Step 4: Simplify right side
    1,818.19x = 2,720,430.98
  5. Step 5: Solve for x
    x = 2,720,430.98/1,818.19
  6. Step 6: Final answer
    x = 1,496.23

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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.