Home / 5,148.30-7,720.65-2,682.30

Finding the Fourth Proportional to 5,148.30, 7,720.65 and 2,682.30

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Solution

The fourth proportional to 5,148.30, 7,720.65 and 2,682.30 is: 4,022.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.30 : 7,720.65 = 2,682.30 : x
  2. Step 2: Convert to fraction form
    5,148.30/7,720.65 = 2,682.30/x
  3. Step 3: Cross multiply
    5,148.30x = 7,720.65 × 2,682.30
  4. Step 4: Simplify right side
    5,148.30x = 20,709,099.50
  5. Step 5: Solve for x
    x = 20,709,099.50/5,148.30
  6. Step 6: Final answer
    x = 4,022.51

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1.5x scale

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.