Home / 2,480.85-3,421.98-1,890.36

Finding the Fourth Proportional to 2,480.85, 3,421.98 and 1,890.36

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Solution

The fourth proportional to 2,480.85, 3,421.98 and 1,890.36 is: 2,607.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,480.85 : 3,421.98 = 1,890.36 : x
  2. Step 2: Convert to fraction form
    2,480.85/3,421.98 = 1,890.36/x
  3. Step 3: Cross multiply
    2,480.85x = 3,421.98 × 1,890.36
  4. Step 4: Simplify right side
    2,480.85x = 6,468,774.11
  5. Step 5: Solve for x
    x = 6,468,774.11/2,480.85
  6. Step 6: Final answer
    x = 2,607.48

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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.