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Finding the Fourth Proportional to 2,185.62, 3,278.58 and 625.76

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Solution

The fourth proportional to 2,185.62, 3,278.58 and 625.76 is: 938.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185.62 : 3,278.58 = 625.76 : x
  2. Step 2: Convert to fraction form
    2,185.62/3,278.58 = 625.76/x
  3. Step 3: Cross multiply
    2,185.62x = 3,278.58 × 625.76
  4. Step 4: Simplify right side
    2,185.62x = 2,051,587.83
  5. Step 5: Solve for x
    x = 2,051,587.83/2,185.62
  6. Step 6: Final answer
    x = 938.68

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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.