Home / 3,511.89-5,264.73-1,320.71

Finding the Fourth Proportional to 3,511.89, 5,264.73 and 1,320.71

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Solution

The fourth proportional to 3,511.89, 5,264.73 and 1,320.71 is: 1,979.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,511.89 : 5,264.73 = 1,320.71 : x
  2. Step 2: Convert to fraction form
    3,511.89/5,264.73 = 1,320.71/x
  3. Step 3: Cross multiply
    3,511.89x = 5,264.73 × 1,320.71
  4. Step 4: Simplify right side
    3,511.89x = 6,953,155.23
  5. Step 5: Solve for x
    x = 6,953,155.23/3,511.89
  6. Step 6: Final answer
    x = 1,979.89

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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.