Home / 1,031.68-1,421.37-845.18

Finding the Fourth Proportional to 1,031.68, 1,421.37 and 845.18

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Solution

The fourth proportional to 1,031.68, 1,421.37 and 845.18 is: 1,164.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,031.68 : 1,421.37 = 845.18 : x
  2. Step 2: Convert to fraction form
    1,031.68/1,421.37 = 845.18/x
  3. Step 3: Cross multiply
    1,031.68x = 1,421.37 × 845.18
  4. Step 4: Simplify right side
    1,031.68x = 1,201,306.39
  5. Step 5: Solve for x
    x = 1,201,306.39/1,031.68
  6. Step 6: Final answer
    x = 1,164.42

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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.