Home / 3,109.34-4,663.66-918.24

Finding the Fourth Proportional to 3,109.34, 4,663.66 and 918.24

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Solution

The fourth proportional to 3,109.34, 4,663.66 and 918.24 is: 1,377.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.34 : 4,663.66 = 918.24 : x
  2. Step 2: Convert to fraction form
    3,109.34/4,663.66 = 918.24/x
  3. Step 3: Cross multiply
    3,109.34x = 4,663.66 × 918.24
  4. Step 4: Simplify right side
    3,109.34x = 4,282,344.97
  5. Step 5: Solve for x
    x = 4,282,344.97/3,109.34
  6. Step 6: Final answer
    x = 1,377.25

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1.5x scale

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.