Home / 2,887.16-4,331.20-938.91

Finding the Fourth Proportional to 2,887.16, 4,331.20 and 938.91

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Solution

The fourth proportional to 2,887.16, 4,331.20 and 938.91 is: 1,408.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.16 : 4,331.20 = 938.91 : x
  2. Step 2: Convert to fraction form
    2,887.16/4,331.20 = 938.91/x
  3. Step 3: Cross multiply
    2,887.16x = 4,331.20 × 938.91
  4. Step 4: Simplify right side
    2,887.16x = 4,066,604.64
  5. Step 5: Solve for x
    x = 4,066,604.64/2,887.16
  6. Step 6: Final answer
    x = 1,408.51

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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.