Home / 1,942.24-2,681.04-1,422.40

Finding the Fourth Proportional to 1,942.24, 2,681.04 and 1,422.40

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Solution

The fourth proportional to 1,942.24, 2,681.04 and 1,422.40 is: 1,963.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.24 : 2,681.04 = 1,422.40 : x
  2. Step 2: Convert to fraction form
    1,942.24/2,681.04 = 1,422.40/x
  3. Step 3: Cross multiply
    1,942.24x = 2,681.04 × 1,422.40
  4. Step 4: Simplify right side
    1,942.24x = 3,813,511.30
  5. Step 5: Solve for x
    x = 3,813,511.30/1,942.24
  6. Step 6: Final answer
    x = 1,963.46

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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.