Home / 1,128.22-1,690.38-1,014.08

Finding the Fourth Proportional to 1,128.22, 1,690.38 and 1,014.08

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Solution

The fourth proportional to 1,128.22, 1,690.38 and 1,014.08 is: 1,519.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128.22 : 1,690.38 = 1,014.08 : x
  2. Step 2: Convert to fraction form
    1,128.22/1,690.38 = 1,014.08/x
  3. Step 3: Cross multiply
    1,128.22x = 1,690.38 × 1,014.08
  4. Step 4: Simplify right side
    1,128.22x = 1,714,180.55
  5. Step 5: Solve for x
    x = 1,714,180.55/1,128.22
  6. Step 6: Final answer
    x = 1,519.37

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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.