Home / 2,488.78-3,730.09-2,181.24

Finding the Fourth Proportional to 2,488.78, 3,730.09 and 2,181.24

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Solution

The fourth proportional to 2,488.78, 3,730.09 and 2,181.24 is: 3,269.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,488.78 : 3,730.09 = 2,181.24 : x
  2. Step 2: Convert to fraction form
    2,488.78/3,730.09 = 2,181.24/x
  3. Step 3: Cross multiply
    2,488.78x = 3,730.09 × 2,181.24
  4. Step 4: Simplify right side
    2,488.78x = 8,136,221.51
  5. Step 5: Solve for x
    x = 8,136,221.51/2,488.78
  6. Step 6: Final answer
    x = 3,269.16

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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.