Home / 2,620.95-3,929.91-1,567.81

Finding the Fourth Proportional to 2,620.95, 3,929.91 and 1,567.81

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Solution

The fourth proportional to 2,620.95, 3,929.91 and 1,567.81 is: 2,350.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.95 : 3,929.91 = 1,567.81 : x
  2. Step 2: Convert to fraction form
    2,620.95/3,929.91 = 1,567.81/x
  3. Step 3: Cross multiply
    2,620.95x = 3,929.91 × 1,567.81
  4. Step 4: Simplify right side
    2,620.95x = 6,161,352.20
  5. Step 5: Solve for x
    x = 6,161,352.20/2,620.95
  6. Step 6: Final answer
    x = 2,350.81

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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.