Home / 2,140.14-2,953.40-1,208.64

Finding the Fourth Proportional to 2,140.14, 2,953.40 and 1,208.64

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Solution

The fourth proportional to 2,140.14, 2,953.40 and 1,208.64 is: 1,667.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.14 : 2,953.40 = 1,208.64 : x
  2. Step 2: Convert to fraction form
    2,140.14/2,953.40 = 1,208.64/x
  3. Step 3: Cross multiply
    2,140.14x = 2,953.40 × 1,208.64
  4. Step 4: Simplify right side
    2,140.14x = 3,569,585.63
  5. Step 5: Solve for x
    x = 3,569,585.63/2,140.14
  6. Step 6: Final answer
    x = 1,667.93

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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.