Home / 3,420.94-4,721.01-1,928.99

Finding the Fourth Proportional to 3,420.94, 4,721.01 and 1,928.99

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Solution

The fourth proportional to 3,420.94, 4,721.01 and 1,928.99 is: 2,662.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.94 : 4,721.01 = 1,928.99 : x
  2. Step 2: Convert to fraction form
    3,420.94/4,721.01 = 1,928.99/x
  3. Step 3: Cross multiply
    3,420.94x = 4,721.01 × 1,928.99
  4. Step 4: Simplify right side
    3,420.94x = 9,106,781.08
  5. Step 5: Solve for x
    x = 9,106,781.08/3,420.94
  6. Step 6: Final answer
    x = 2,662.07

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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.