Home / 2,887.75-3,984.78-1,628.77

Finding the Fourth Proportional to 2,887.75, 3,984.78 and 1,628.77

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Solution

The fourth proportional to 2,887.75, 3,984.78 and 1,628.77 is: 2,247.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.75 : 3,984.78 = 1,628.77 : x
  2. Step 2: Convert to fraction form
    2,887.75/3,984.78 = 1,628.77/x
  3. Step 3: Cross multiply
    2,887.75x = 3,984.78 × 1,628.77
  4. Step 4: Simplify right side
    2,887.75x = 6,490,290.12
  5. Step 5: Solve for x
    x = 6,490,290.12/2,887.75
  6. Step 6: Final answer
    x = 2,247.52

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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.