Home / 3,612.80-5,395.08-3,428.28

Finding the Fourth Proportional to 3,612.80, 5,395.08 and 3,428.28

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Solution

The fourth proportional to 3,612.80, 5,395.08 and 3,428.28 is: 5,119.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.80 : 5,395.08 = 3,428.28 : x
  2. Step 2: Convert to fraction form
    3,612.80/5,395.08 = 3,428.28/x
  3. Step 3: Cross multiply
    3,612.80x = 5,395.08 × 3,428.28
  4. Step 4: Simplify right side
    3,612.80x = 18,495,844.86
  5. Step 5: Solve for x
    x = 18,495,844.86/3,612.80
  6. Step 6: Final answer
    x = 5,119.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.