Home / 3,511.27-5,264.86-1,320.17

Finding the Fourth Proportional to 3,511.27, 5,264.86 and 1,320.17

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Solution

The fourth proportional to 3,511.27, 5,264.86 and 1,320.17 is: 1,979.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,511.27 : 5,264.86 = 1,320.17 : x
  2. Step 2: Convert to fraction form
    3,511.27/5,264.86 = 1,320.17/x
  3. Step 3: Cross multiply
    3,511.27x = 5,264.86 × 1,320.17
  4. Step 4: Simplify right side
    3,511.27x = 6,950,529.36
  5. Step 5: Solve for x
    x = 6,950,529.36/3,511.27
  6. Step 6: Final answer
    x = 1,979.49

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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.