Home / 1,515.99-2,273.34-578.78

Finding the Fourth Proportional to 1,515.99, 2,273.34 and 578.78

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Solution

The fourth proportional to 1,515.99, 2,273.34 and 578.78 is: 867.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.99 : 2,273.34 = 578.78 : x
  2. Step 2: Convert to fraction form
    1,515.99/2,273.34 = 578.78/x
  3. Step 3: Cross multiply
    1,515.99x = 2,273.34 × 578.78
  4. Step 4: Simplify right side
    1,515.99x = 1,315,752.36
  5. Step 5: Solve for x
    x = 1,315,752.36/1,515.99
  6. Step 6: Final answer
    x = 867.92

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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.