Home / 3,511.44-5,265.72-1,319.76

Finding the Fourth Proportional to 3,511.44, 5,265.72 and 1,319.76

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Solution

The fourth proportional to 3,511.44, 5,265.72 and 1,319.76 is: 1,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,511.44 : 5,265.72 = 1,319.76 : x
  2. Step 2: Convert to fraction form
    3,511.44/5,265.72 = 1,319.76/x
  3. Step 3: Cross multiply
    3,511.44x = 5,265.72 × 1,319.76
  4. Step 4: Simplify right side
    3,511.44x = 6,949,486.63
  5. Step 5: Solve for x
    x = 6,949,486.63/3,511.44
  6. Step 6: Final answer
    x = 1,979.10

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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.