Home / 3,420.13-4,719.61-1,928.04

Finding the Fourth Proportional to 3,420.13, 4,719.61 and 1,928.04

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Solution

The fourth proportional to 3,420.13, 4,719.61 and 1,928.04 is: 2,660.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.13 : 4,719.61 = 1,928.04 : x
  2. Step 2: Convert to fraction form
    3,420.13/4,719.61 = 1,928.04/x
  3. Step 3: Cross multiply
    3,420.13x = 4,719.61 × 1,928.04
  4. Step 4: Simplify right side
    3,420.13x = 9,099,600.13
  5. Step 5: Solve for x
    x = 9,099,600.13/3,420.13
  6. Step 6: Final answer
    x = 2,660.60

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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.