Home / 2,102.40-2,900.88-1,708.74

Finding the Fourth Proportional to 2,102.40, 2,900.88 and 1,708.74

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Solution

The fourth proportional to 2,102.40, 2,900.88 and 1,708.74 is: 2,357.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,102.40 : 2,900.88 = 1,708.74 : x
  2. Step 2: Convert to fraction form
    2,102.40/2,900.88 = 1,708.74/x
  3. Step 3: Cross multiply
    2,102.40x = 2,900.88 × 1,708.74
  4. Step 4: Simplify right side
    2,102.40x = 4,956,849.69
  5. Step 5: Solve for x
    x = 4,956,849.69/2,102.40
  6. Step 6: Final answer
    x = 2,357.71

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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.