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Finding the Fourth Proportional to 2,145.57, 3,218.33 and 585.56

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Solution

The fourth proportional to 2,145.57, 3,218.33 and 585.56 is: 878.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.57 : 3,218.33 = 585.56 : x
  2. Step 2: Convert to fraction form
    2,145.57/3,218.33 = 585.56/x
  3. Step 3: Cross multiply
    2,145.57x = 3,218.33 × 585.56
  4. Step 4: Simplify right side
    2,145.57x = 1,884,506.30
  5. Step 5: Solve for x
    x = 1,884,506.30/2,145.57
  6. Step 6: Final answer
    x = 878.32

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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.