Home / 3,901.28-5,382.40-2,328.80

Finding the Fourth Proportional to 3,901.28, 5,382.40 and 2,328.80

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Solution

The fourth proportional to 3,901.28, 5,382.40 and 2,328.80 is: 3,212.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,901.28 : 5,382.40 = 2,328.80 : x
  2. Step 2: Convert to fraction form
    3,901.28/5,382.40 = 2,328.80/x
  3. Step 3: Cross multiply
    3,901.28x = 5,382.40 × 2,328.80
  4. Step 4: Simplify right side
    3,901.28x = 12,534,533.12
  5. Step 5: Solve for x
    x = 12,534,533.12/3,901.28
  6. Step 6: Final answer
    x = 3,212.93

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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.