Home / 2,887.70-4,332.57-939.91

Finding the Fourth Proportional to 2,887.70, 4,332.57 and 939.91

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Solution

The fourth proportional to 2,887.70, 4,332.57 and 939.91 is: 1,410.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.70 : 4,332.57 = 939.91 : x
  2. Step 2: Convert to fraction form
    2,887.70/4,332.57 = 939.91/x
  3. Step 3: Cross multiply
    2,887.70x = 4,332.57 × 939.91
  4. Step 4: Simplify right side
    2,887.70x = 4,072,225.87
  5. Step 5: Solve for x
    x = 4,072,225.87/2,887.70
  6. Step 6: Final answer
    x = 1,410.20

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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.