Home / 2,658.63-3,987.99-1,359.30

Finding the Fourth Proportional to 2,658.63, 3,987.99 and 1,359.30

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Solution

The fourth proportional to 2,658.63, 3,987.99 and 1,359.30 is: 2,038.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,658.63 : 3,987.99 = 1,359.30 : x
  2. Step 2: Convert to fraction form
    2,658.63/3,987.99 = 1,359.30/x
  3. Step 3: Cross multiply
    2,658.63x = 3,987.99 × 1,359.30
  4. Step 4: Simplify right side
    2,658.63x = 5,420,874.81
  5. Step 5: Solve for x
    x = 5,420,874.81/2,658.63
  6. Step 6: Final answer
    x = 2,038.97

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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.