Home / 1,536.38-2,120.20-837.75

Finding the Fourth Proportional to 1,536.38, 2,120.20 and 837.75

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Solution

The fourth proportional to 1,536.38, 2,120.20 and 837.75 is: 1,156.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,536.38 : 2,120.20 = 837.75 : x
  2. Step 2: Convert to fraction form
    1,536.38/2,120.20 = 837.75/x
  3. Step 3: Cross multiply
    1,536.38x = 2,120.20 × 837.75
  4. Step 4: Simplify right side
    1,536.38x = 1,776,197.55
  5. Step 5: Solve for x
    x = 1,776,197.55/1,536.38
  6. Step 6: Final answer
    x = 1,156.09

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1.5x scale

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.