Home / 1,126.85-1,556.12-1,065.49

Finding the Fourth Proportional to 1,126.85, 1,556.12 and 1,065.49

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Solution

The fourth proportional to 1,126.85, 1,556.12 and 1,065.49 is: 1,471.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.85 : 1,556.12 = 1,065.49 : x
  2. Step 2: Convert to fraction form
    1,126.85/1,556.12 = 1,065.49/x
  3. Step 3: Cross multiply
    1,126.85x = 1,556.12 × 1,065.49
  4. Step 4: Simplify right side
    1,126.85x = 1,658,030.30
  5. Step 5: Solve for x
    x = 1,658,030.30/1,126.85
  6. Step 6: Final answer
    x = 1,471.39

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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.