Home / 2,454.40-3,386.98-1,392.22

Finding the Fourth Proportional to 2,454.40, 3,386.98 and 1,392.22

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Solution

The fourth proportional to 2,454.40, 3,386.98 and 1,392.22 is: 1,921.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,454.40 : 3,386.98 = 1,392.22 : x
  2. Step 2: Convert to fraction form
    2,454.40/3,386.98 = 1,392.22/x
  3. Step 3: Cross multiply
    2,454.40x = 3,386.98 × 1,392.22
  4. Step 4: Simplify right side
    2,454.40x = 4,715,427.27
  5. Step 5: Solve for x
    x = 4,715,427.27/2,454.40
  6. Step 6: Final answer
    x = 1,921.21

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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.