Home / 2,878.48-4,309.68-2,618.72

Finding the Fourth Proportional to 2,878.48, 4,309.68 and 2,618.72

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Solution

The fourth proportional to 2,878.48, 4,309.68 and 2,618.72 is: 3,920.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.48 : 4,309.68 = 2,618.72 : x
  2. Step 2: Convert to fraction form
    2,878.48/4,309.68 = 2,618.72/x
  3. Step 3: Cross multiply
    2,878.48x = 4,309.68 × 2,618.72
  4. Step 4: Simplify right side
    2,878.48x = 11,285,845.21
  5. Step 5: Solve for x
    x = 11,285,845.21/2,878.48
  6. Step 6: Final answer
    x = 3,920.77

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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.