Home / 2,478.75-3,719.57-1,110.75

Finding the Fourth Proportional to 2,478.75, 3,719.57 and 1,110.75

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Solution

The fourth proportional to 2,478.75, 3,719.57 and 1,110.75 is: 1,666.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.75 : 3,719.57 = 1,110.75 : x
  2. Step 2: Convert to fraction form
    2,478.75/3,719.57 = 1,110.75/x
  3. Step 3: Cross multiply
    2,478.75x = 3,719.57 × 1,110.75
  4. Step 4: Simplify right side
    2,478.75x = 4,131,506.82
  5. Step 5: Solve for x
    x = 4,131,506.82/2,478.75
  6. Step 6: Final answer
    x = 1,666.77

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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.