Home / 2,133.40-2,943.57-1,201.90

Finding the Fourth Proportional to 2,133.40, 2,943.57 and 1,201.90

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Solution

The fourth proportional to 2,133.40, 2,943.57 and 1,201.90 is: 1,658.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,133.40 : 2,943.57 = 1,201.90 : x
  2. Step 2: Convert to fraction form
    2,133.40/2,943.57 = 1,201.90/x
  3. Step 3: Cross multiply
    2,133.40x = 2,943.57 × 1,201.90
  4. Step 4: Simplify right side
    2,133.40x = 3,537,862.07
  5. Step 5: Solve for x
    x = 3,537,862.07/2,133.40
  6. Step 6: Final answer
    x = 1,658.32

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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.