Home / 4,909.16-7,363.78-1,399.21

Finding the Fourth Proportional to 4,909.16, 7,363.78 and 1,399.21

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Solution

The fourth proportional to 4,909.16, 7,363.78 and 1,399.21 is: 2,098.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,909.16 : 7,363.78 = 1,399.21 : x
  2. Step 2: Convert to fraction form
    4,909.16/7,363.78 = 1,399.21/x
  3. Step 3: Cross multiply
    4,909.16x = 7,363.78 × 1,399.21
  4. Step 4: Simplify right side
    4,909.16x = 10,303,452.71
  5. Step 5: Solve for x
    x = 10,303,452.71/4,909.16
  6. Step 6: Final answer
    x = 2,098.82

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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.