Home / 1,536.15-2,119.28-872.91

Finding the Fourth Proportional to 1,536.15, 2,119.28 and 872.91

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Solution

The fourth proportional to 1,536.15, 2,119.28 and 872.91 is: 1,204.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,536.15 : 2,119.28 = 872.91 : x
  2. Step 2: Convert to fraction form
    1,536.15/2,119.28 = 872.91/x
  3. Step 3: Cross multiply
    1,536.15x = 2,119.28 × 872.91
  4. Step 4: Simplify right side
    1,536.15x = 1,849,940.70
  5. Step 5: Solve for x
    x = 1,849,940.70/1,536.15
  6. Step 6: Final answer
    x = 1,204.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.