Home / 3,420.84-5,122.96-1,955.55

Finding the Fourth Proportional to 3,420.84, 5,122.96 and 1,955.55

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Solution

The fourth proportional to 3,420.84, 5,122.96 and 1,955.55 is: 2,928.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.84 : 5,122.96 = 1,955.55 : x
  2. Step 2: Convert to fraction form
    3,420.84/5,122.96 = 1,955.55/x
  3. Step 3: Cross multiply
    3,420.84x = 5,122.96 × 1,955.55
  4. Step 4: Simplify right side
    3,420.84x = 10,018,204.43
  5. Step 5: Solve for x
    x = 10,018,204.43/3,420.84
  6. Step 6: Final answer
    x = 2,928.58

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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.