Home / 2,112.28-2,913.06-1,326.40

Finding the Fourth Proportional to 2,112.28, 2,913.06 and 1,326.40

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Solution

The fourth proportional to 2,112.28, 2,913.06 and 1,326.40 is: 1,829.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.28 : 2,913.06 = 1,326.40 : x
  2. Step 2: Convert to fraction form
    2,112.28/2,913.06 = 1,326.40/x
  3. Step 3: Cross multiply
    2,112.28x = 2,913.06 × 1,326.40
  4. Step 4: Simplify right side
    2,112.28x = 3,863,882.78
  5. Step 5: Solve for x
    x = 3,863,882.78/2,112.28
  6. Step 6: Final answer
    x = 1,829.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.