Home / 2,422.16-3,342.80-1,374.40

Finding the Fourth Proportional to 2,422.16, 3,342.80 and 1,374.40

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Solution

The fourth proportional to 2,422.16, 3,342.80 and 1,374.40 is: 1,896.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,422.16 : 3,342.80 = 1,374.40 : x
  2. Step 2: Convert to fraction form
    2,422.16/3,342.80 = 1,374.40/x
  3. Step 3: Cross multiply
    2,422.16x = 3,342.80 × 1,374.40
  4. Step 4: Simplify right side
    2,422.16x = 4,594,344.32
  5. Step 5: Solve for x
    x = 4,594,344.32/2,422.16
  6. Step 6: Final answer
    x = 1,896.80

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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.