Home / 5,165.02-7,128.86-3,396.79

Finding the Fourth Proportional to 5,165.02, 7,128.86 and 3,396.79

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Solution

The fourth proportional to 5,165.02, 7,128.86 and 3,396.79 is: 4,688.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,165.02 : 7,128.86 = 3,396.79 : x
  2. Step 2: Convert to fraction form
    5,165.02/7,128.86 = 3,396.79/x
  3. Step 3: Cross multiply
    5,165.02x = 7,128.86 × 3,396.79
  4. Step 4: Simplify right side
    5,165.02x = 24,215,223.38
  5. Step 5: Solve for x
    x = 24,215,223.38/5,165.02
  6. Step 6: Final answer
    x = 4,688.31

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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.