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Finding the Fourth Proportional to 2,887.76, 4,331.63 and 696.49

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Solution

The fourth proportional to 2,887.76, 4,331.63 and 696.49 is: 1,044.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.76 : 4,331.63 = 696.49 : x
  2. Step 2: Convert to fraction form
    2,887.76/4,331.63 = 696.49/x
  3. Step 3: Cross multiply
    2,887.76x = 4,331.63 × 696.49
  4. Step 4: Simplify right side
    2,887.76x = 3,016,927.89
  5. Step 5: Solve for x
    x = 3,016,927.89/2,887.76
  6. Step 6: Final answer
    x = 1,044.73

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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.