Home / 3,887.24-5,364.52-2,118.76

Finding the Fourth Proportional to 3,887.24, 5,364.52 and 2,118.76

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Solution

The fourth proportional to 3,887.24, 5,364.52 and 2,118.76 is: 2,923.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.24 : 5,364.52 = 2,118.76 : x
  2. Step 2: Convert to fraction form
    3,887.24/5,364.52 = 2,118.76/x
  3. Step 3: Cross multiply
    3,887.24x = 5,364.52 × 2,118.76
  4. Step 4: Simplify right side
    3,887.24x = 11,366,130.40
  5. Step 5: Solve for x
    x = 11,366,130.40/3,887.24
  6. Step 6: Final answer
    x = 2,923.96

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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.