Home / 5,281.45-7,281.78-3,389.69

Finding the Fourth Proportional to 5,281.45, 7,281.78 and 3,389.69

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Solution

The fourth proportional to 5,281.45, 7,281.78 and 3,389.69 is: 4,673.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.45 : 7,281.78 = 3,389.69 : x
  2. Step 2: Convert to fraction form
    5,281.45/7,281.78 = 3,389.69/x
  3. Step 3: Cross multiply
    5,281.45x = 7,281.78 × 3,389.69
  4. Step 4: Simplify right side
    5,281.45x = 24,682,995.05
  5. Step 5: Solve for x
    x = 24,682,995.05/5,281.45
  6. Step 6: Final answer
    x = 4,673.53

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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.