Home / 3,068.40-4,238.28-2,378.28

Finding the Fourth Proportional to 3,068.40, 4,238.28 and 2,378.28

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Solution

The fourth proportional to 3,068.40, 4,238.28 and 2,378.28 is: 3,285.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,068.40 : 4,238.28 = 2,378.28 : x
  2. Step 2: Convert to fraction form
    3,068.40/4,238.28 = 2,378.28/x
  3. Step 3: Cross multiply
    3,068.40x = 4,238.28 × 2,378.28
  4. Step 4: Simplify right side
    3,068.40x = 10,079,816.56
  5. Step 5: Solve for x
    x = 10,079,816.56/3,068.40
  6. Step 6: Final answer
    x = 3,285.04

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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.