Home / 5,431.83-7,488.75-3,918.12

Finding the Fourth Proportional to 5,431.83, 7,488.75 and 3,918.12

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Solution

The fourth proportional to 5,431.83, 7,488.75 and 3,918.12 is: 5,401.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.83 : 7,488.75 = 3,918.12 : x
  2. Step 2: Convert to fraction form
    5,431.83/7,488.75 = 3,918.12/x
  3. Step 3: Cross multiply
    5,431.83x = 7,488.75 × 3,918.12
  4. Step 4: Simplify right side
    5,431.83x = 29,341,849.88
  5. Step 5: Solve for x
    x = 29,341,849.88/5,431.83
  6. Step 6: Final answer
    x = 5,401.83

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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.