Home / 5,386.82-7,434.40-3,149.46

Finding the Fourth Proportional to 5,386.82, 7,434.40 and 3,149.46

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Solution

The fourth proportional to 5,386.82, 7,434.40 and 3,149.46 is: 4,346.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.82 : 7,434.40 = 3,149.46 : x
  2. Step 2: Convert to fraction form
    5,386.82/7,434.40 = 3,149.46/x
  3. Step 3: Cross multiply
    5,386.82x = 7,434.40 × 3,149.46
  4. Step 4: Simplify right side
    5,386.82x = 23,414,345.42
  5. Step 5: Solve for x
    x = 23,414,345.42/5,386.82
  6. Step 6: Final answer
    x = 4,346.60

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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.