Home / 2,420.18-3,619.33-1,864.79

Finding the Fourth Proportional to 2,420.18, 3,619.33 and 1,864.79

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Solution

The fourth proportional to 2,420.18, 3,619.33 and 1,864.79 is: 2,788.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.18 : 3,619.33 = 1,864.79 : x
  2. Step 2: Convert to fraction form
    2,420.18/3,619.33 = 1,864.79/x
  3. Step 3: Cross multiply
    2,420.18x = 3,619.33 × 1,864.79
  4. Step 4: Simplify right side
    2,420.18x = 6,749,267.63
  5. Step 5: Solve for x
    x = 6,749,267.63/2,420.18
  6. Step 6: Final answer
    x = 2,788.75

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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.