Home / 2,509.80-3,767.02-1,278.10

Finding the Fourth Proportional to 2,509.80, 3,767.02 and 1,278.10

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Solution

The fourth proportional to 2,509.80, 3,767.02 and 1,278.10 is: 1,918.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,509.80 : 3,767.02 = 1,278.10 : x
  2. Step 2: Convert to fraction form
    2,509.80/3,767.02 = 1,278.10/x
  3. Step 3: Cross multiply
    2,509.80x = 3,767.02 × 1,278.10
  4. Step 4: Simplify right side
    2,509.80x = 4,814,615.65
  5. Step 5: Solve for x
    x = 4,814,615.65/2,509.80
  6. Step 6: Final answer
    x = 1,918.33

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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.