Home / 3,820.32-5,730.84-1,355.40

Finding the Fourth Proportional to 3,820.32, 5,730.84 and 1,355.40

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Solution

The fourth proportional to 3,820.32, 5,730.84 and 1,355.40 is: 2,033.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820.32 : 5,730.84 = 1,355.40 : x
  2. Step 2: Convert to fraction form
    3,820.32/5,730.84 = 1,355.40/x
  3. Step 3: Cross multiply
    3,820.32x = 5,730.84 × 1,355.40
  4. Step 4: Simplify right side
    3,820.32x = 7,767,580.54
  5. Step 5: Solve for x
    x = 7,767,580.54/3,820.32
  6. Step 6: Final answer
    x = 2,033.23

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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.