Home / 2,887.94-3,985.11-1,628.75

Finding the Fourth Proportional to 2,887.94, 3,985.11 and 1,628.75

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Solution

The fourth proportional to 2,887.94, 3,985.11 and 1,628.75 is: 2,247.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.94 : 3,985.11 = 1,628.75 : x
  2. Step 2: Convert to fraction form
    2,887.94/3,985.11 = 1,628.75/x
  3. Step 3: Cross multiply
    2,887.94x = 3,985.11 × 1,628.75
  4. Step 4: Simplify right side
    2,887.94x = 6,490,747.91
  5. Step 5: Solve for x
    x = 6,490,747.91/2,887.94
  6. Step 6: Final answer
    x = 2,247.54

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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.