Home / 3,420.84-5,108.45-3,384.28

Finding the Fourth Proportional to 3,420.84, 5,108.45 and 3,384.28

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Solution

The fourth proportional to 3,420.84, 5,108.45 and 3,384.28 is: 5,053.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.84 : 5,108.45 = 3,384.28 : x
  2. Step 2: Convert to fraction form
    3,420.84/5,108.45 = 3,384.28/x
  3. Step 3: Cross multiply
    3,420.84x = 5,108.45 × 3,384.28
  4. Step 4: Simplify right side
    3,420.84x = 17,288,425.17
  5. Step 5: Solve for x
    x = 17,288,425.17/3,420.84
  6. Step 6: Final answer
    x = 5,053.85

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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.