Home / 2,140.06-2,952.39-1,440.22

Finding the Fourth Proportional to 2,140.06, 2,952.39 and 1,440.22

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Solution

The fourth proportional to 2,140.06, 2,952.39 and 1,440.22 is: 1,986.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.06 : 2,952.39 = 1,440.22 : x
  2. Step 2: Convert to fraction form
    2,140.06/2,952.39 = 1,440.22/x
  3. Step 3: Cross multiply
    2,140.06x = 2,952.39 × 1,440.22
  4. Step 4: Simplify right side
    2,140.06x = 4,252,091.13
  5. Step 5: Solve for x
    x = 4,252,091.13/2,140.06
  6. Step 6: Final answer
    x = 1,986.90

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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.