Home / 3,878.96-5,818.16-1,281.04

Finding the Fourth Proportional to 3,878.96, 5,818.16 and 1,281.04

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Solution

The fourth proportional to 3,878.96, 5,818.16 and 1,281.04 is: 1,921.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.96 : 5,818.16 = 1,281.04 : x
  2. Step 2: Convert to fraction form
    3,878.96/5,818.16 = 1,281.04/x
  3. Step 3: Cross multiply
    3,878.96x = 5,818.16 × 1,281.04
  4. Step 4: Simplify right side
    3,878.96x = 7,453,295.69
  5. Step 5: Solve for x
    x = 7,453,295.69/3,878.96
  6. Step 6: Final answer
    x = 1,921.47

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1.5x scale

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.