Home / 2,881.24-4,320.78-1,421.08

Finding the Fourth Proportional to 2,881.24, 4,320.78 and 1,421.08

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Solution

The fourth proportional to 2,881.24, 4,320.78 and 1,421.08 is: 2,131.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,881.24 : 4,320.78 = 1,421.08 : x
  2. Step 2: Convert to fraction form
    2,881.24/4,320.78 = 1,421.08/x
  3. Step 3: Cross multiply
    2,881.24x = 4,320.78 × 1,421.08
  4. Step 4: Simplify right side
    2,881.24x = 6,140,174.04
  5. Step 5: Solve for x
    x = 6,140,174.04/2,881.24
  6. Step 6: Final answer
    x = 2,131.09

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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.