Home / 3,885.36-5,828.40-1,252.20

Finding the Fourth Proportional to 3,885.36, 5,828.40 and 1,252.20

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Solution

The fourth proportional to 3,885.36, 5,828.40 and 1,252.20 is: 1,878.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.36 : 5,828.40 = 1,252.20 : x
  2. Step 2: Convert to fraction form
    3,885.36/5,828.40 = 1,252.20/x
  3. Step 3: Cross multiply
    3,885.36x = 5,828.40 × 1,252.20
  4. Step 4: Simplify right side
    3,885.36x = 7,298,322.48
  5. Step 5: Solve for x
    x = 7,298,322.48/3,885.36
  6. Step 6: Final answer
    x = 1,878.42

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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.