Home / 3,878.46-5,818.59-1,281.60

Finding the Fourth Proportional to 3,878.46, 5,818.59 and 1,281.60

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Solution

The fourth proportional to 3,878.46, 5,818.59 and 1,281.60 is: 1,922.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.46 : 5,818.59 = 1,281.60 : x
  2. Step 2: Convert to fraction form
    3,878.46/5,818.59 = 1,281.60/x
  3. Step 3: Cross multiply
    3,878.46x = 5,818.59 × 1,281.60
  4. Step 4: Simplify right side
    3,878.46x = 7,457,104.94
  5. Step 5: Solve for x
    x = 7,457,104.94/3,878.46
  6. Step 6: Final answer
    x = 1,922.70

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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.