Home / 5,405.82-7,460.58-3,390.66

Finding the Fourth Proportional to 5,405.82, 7,460.58 and 3,390.66

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Solution

The fourth proportional to 5,405.82, 7,460.58 and 3,390.66 is: 4,679.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,405.82 : 7,460.58 = 3,390.66 : x
  2. Step 2: Convert to fraction form
    5,405.82/7,460.58 = 3,390.66/x
  3. Step 3: Cross multiply
    5,405.82x = 7,460.58 × 3,390.66
  4. Step 4: Simplify right side
    5,405.82x = 25,296,290.18
  5. Step 5: Solve for x
    x = 25,296,290.18/5,405.82
  6. Step 6: Final answer
    x = 4,679.45

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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.