Home / 2,850.36-4,269.28-1,386.40

Finding the Fourth Proportional to 2,850.36, 4,269.28 and 1,386.40

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Solution

The fourth proportional to 2,850.36, 4,269.28 and 1,386.40 is: 2,076.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,850.36 : 4,269.28 = 1,386.40 : x
  2. Step 2: Convert to fraction form
    2,850.36/4,269.28 = 1,386.40/x
  3. Step 3: Cross multiply
    2,850.36x = 4,269.28 × 1,386.40
  4. Step 4: Simplify right side
    2,850.36x = 5,918,929.79
  5. Step 5: Solve for x
    x = 5,918,929.79/2,850.36
  6. Step 6: Final answer
    x = 2,076.56

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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.