Home / 2,425.94-3,347.79-1,378.20

Finding the Fourth Proportional to 2,425.94, 3,347.79 and 1,378.20

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Solution

The fourth proportional to 2,425.94, 3,347.79 and 1,378.20 is: 1,901.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,425.94 : 3,347.79 = 1,378.20 : x
  2. Step 2: Convert to fraction form
    2,425.94/3,347.79 = 1,378.20/x
  3. Step 3: Cross multiply
    2,425.94x = 3,347.79 × 1,378.20
  4. Step 4: Simplify right side
    2,425.94x = 4,613,924.18
  5. Step 5: Solve for x
    x = 4,613,924.18/2,425.94
  6. Step 6: Final answer
    x = 1,901.91

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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.