Home / 2,140.28-2,952.96-1,256.12

Finding the Fourth Proportional to 2,140.28, 2,952.96 and 1,256.12

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Solution

The fourth proportional to 2,140.28, 2,952.96 and 1,256.12 is: 1,733.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.28 : 2,952.96 = 1,256.12 : x
  2. Step 2: Convert to fraction form
    2,140.28/2,952.96 = 1,256.12/x
  3. Step 3: Cross multiply
    2,140.28x = 2,952.96 × 1,256.12
  4. Step 4: Simplify right side
    2,140.28x = 3,709,272.12
  5. Step 5: Solve for x
    x = 3,709,272.12/2,140.28
  6. Step 6: Final answer
    x = 1,733.08

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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.