Home / 3,156.02-4,728.80-1,919.69

Finding the Fourth Proportional to 3,156.02, 4,728.80 and 1,919.69

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Solution

The fourth proportional to 3,156.02, 4,728.80 and 1,919.69 is: 2,876.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.02 : 4,728.80 = 1,919.69 : x
  2. Step 2: Convert to fraction form
    3,156.02/4,728.80 = 1,919.69/x
  3. Step 3: Cross multiply
    3,156.02x = 4,728.80 × 1,919.69
  4. Step 4: Simplify right side
    3,156.02x = 9,077,839.56
  5. Step 5: Solve for x
    x = 9,077,839.56/3,156.02
  6. Step 6: Final answer
    x = 2,876.36

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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.