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Finding the Fourth Proportional to 1,552.96, 2,142.21 and 963.10

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Solution

The fourth proportional to 1,552.96, 2,142.21 and 963.10 is: 1,328.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,552.96 : 2,142.21 = 963.10 : x
  2. Step 2: Convert to fraction form
    1,552.96/2,142.21 = 963.10/x
  3. Step 3: Cross multiply
    1,552.96x = 2,142.21 × 963.10
  4. Step 4: Simplify right side
    1,552.96x = 2,063,162.45
  5. Step 5: Solve for x
    x = 2,063,162.45/1,552.96
  6. Step 6: Final answer
    x = 1,328.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.