Home / 2,454.74-3,386.71-1,392.39

Finding the Fourth Proportional to 2,454.74, 3,386.71 and 1,392.39

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Solution

The fourth proportional to 2,454.74, 3,386.71 and 1,392.39 is: 1,921.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,454.74 : 3,386.71 = 1,392.39 : x
  2. Step 2: Convert to fraction form
    2,454.74/3,386.71 = 1,392.39/x
  3. Step 3: Cross multiply
    2,454.74x = 3,386.71 × 1,392.39
  4. Step 4: Simplify right side
    2,454.74x = 4,715,622.88
  5. Step 5: Solve for x
    x = 4,715,622.88/2,454.74
  6. Step 6: Final answer
    x = 1,921.03

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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.