Home / 2,139.64-2,952.76-1,208.14

Finding the Fourth Proportional to 2,139.64, 2,952.76 and 1,208.14

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Solution

The fourth proportional to 2,139.64, 2,952.76 and 1,208.14 is: 1,667.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139.64 : 2,952.76 = 1,208.14 : x
  2. Step 2: Convert to fraction form
    2,139.64/2,952.76 = 1,208.14/x
  3. Step 3: Cross multiply
    2,139.64x = 2,952.76 × 1,208.14
  4. Step 4: Simplify right side
    2,139.64x = 3,567,347.47
  5. Step 5: Solve for x
    x = 3,567,347.47/2,139.64
  6. Step 6: Final answer
    x = 1,667.27

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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.