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Finding the Fourth Proportional to 2,185.48, 3,278.12 and 625.48

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Solution

The fourth proportional to 2,185.48, 3,278.12 and 625.48 is: 938.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185.48 : 3,278.12 = 625.48 : x
  2. Step 2: Convert to fraction form
    2,185.48/3,278.12 = 625.48/x
  3. Step 3: Cross multiply
    2,185.48x = 3,278.12 × 625.48
  4. Step 4: Simplify right side
    2,185.48x = 2,050,398.50
  5. Step 5: Solve for x
    x = 2,050,398.50/2,185.48
  6. Step 6: Final answer
    x = 938.19

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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.