Home / 2,511.76-3,475.56-2,181.28

Finding the Fourth Proportional to 2,511.76, 3,475.56 and 2,181.28

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Solution

The fourth proportional to 2,511.76, 3,475.56 and 2,181.28 is: 3,018.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,511.76 : 3,475.56 = 2,181.28 : x
  2. Step 2: Convert to fraction form
    2,511.76/3,475.56 = 2,181.28/x
  3. Step 3: Cross multiply
    2,511.76x = 3,475.56 × 2,181.28
  4. Step 4: Simplify right side
    2,511.76x = 7,581,169.52
  5. Step 5: Solve for x
    x = 7,581,169.52/2,511.76
  6. Step 6: Final answer
    x = 3,018.27

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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.