Home / 2,628.75-3,943.04-1,242.20

Finding the Fourth Proportional to 2,628.75, 3,943.04 and 1,242.20

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Solution

The fourth proportional to 2,628.75, 3,943.04 and 1,242.20 is: 1,863.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.75 : 3,943.04 = 1,242.20 : x
  2. Step 2: Convert to fraction form
    2,628.75/3,943.04 = 1,242.20/x
  3. Step 3: Cross multiply
    2,628.75x = 3,943.04 × 1,242.20
  4. Step 4: Simplify right side
    2,628.75x = 4,898,018.36
  5. Step 5: Solve for x
    x = 4,898,018.36/2,628.75
  6. Step 6: Final answer
    x = 1,863.25

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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.