Home / 2,911.90-4,362.72-2,545.78

Finding the Fourth Proportional to 2,911.90, 4,362.72 and 2,545.78

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Solution

The fourth proportional to 2,911.90, 4,362.72 and 2,545.78 is: 3,814.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.90 : 4,362.72 = 2,545.78 : x
  2. Step 2: Convert to fraction form
    2,911.90/4,362.72 = 2,545.78/x
  3. Step 3: Cross multiply
    2,911.90x = 4,362.72 × 2,545.78
  4. Step 4: Simplify right side
    2,911.90x = 11,106,525.32
  5. Step 5: Solve for x
    x = 11,106,525.32/2,911.90
  6. Step 6: Final answer
    x = 3,814.19

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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.