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Finding the Fourth Proportional to 2,113.67, 3,170.81 and 653.27

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Solution

The fourth proportional to 2,113.67, 3,170.81 and 653.27 is: 980.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.67 : 3,170.81 = 653.27 : x
  2. Step 2: Convert to fraction form
    2,113.67/3,170.81 = 653.27/x
  3. Step 3: Cross multiply
    2,113.67x = 3,170.81 × 653.27
  4. Step 4: Simplify right side
    2,113.67x = 2,071,395.05
  5. Step 5: Solve for x
    x = 2,071,395.05/2,113.67
  6. Step 6: Final answer
    x = 980.00

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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.