Home / 3,874.36-5,811.12-1,277.20

Finding the Fourth Proportional to 3,874.36, 5,811.12 and 1,277.20

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Solution

The fourth proportional to 3,874.36, 5,811.12 and 1,277.20 is: 1,915.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,874.36 : 5,811.12 = 1,277.20 : x
  2. Step 2: Convert to fraction form
    3,874.36/5,811.12 = 1,277.20/x
  3. Step 3: Cross multiply
    3,874.36x = 5,811.12 × 1,277.20
  4. Step 4: Simplify right side
    3,874.36x = 7,421,962.46
  5. Step 5: Solve for x
    x = 7,421,962.46/3,874.36
  6. Step 6: Final answer
    x = 1,915.66

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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.