Home / 3,885.51-5,828.15-1,112.12

Finding the Fourth Proportional to 3,885.51, 5,828.15 and 1,112.12

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Solution

The fourth proportional to 3,885.51, 5,828.15 and 1,112.12 is: 1,668.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.51 : 5,828.15 = 1,112.12 : x
  2. Step 2: Convert to fraction form
    3,885.51/5,828.15 = 1,112.12/x
  3. Step 3: Cross multiply
    3,885.51x = 5,828.15 × 1,112.12
  4. Step 4: Simplify right side
    3,885.51x = 6,481,602.18
  5. Step 5: Solve for x
    x = 6,481,602.18/3,885.51
  6. Step 6: Final answer
    x = 1,668.15

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Double scale
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Similar ratio
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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.