Home / 2,117.81-2,922.58-1,173.61

Finding the Fourth Proportional to 2,117.81, 2,922.58 and 1,173.61

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Solution

The fourth proportional to 2,117.81, 2,922.58 and 1,173.61 is: 1,619.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.81 : 2,922.58 = 1,173.61 : x
  2. Step 2: Convert to fraction form
    2,117.81/2,922.58 = 1,173.61/x
  3. Step 3: Cross multiply
    2,117.81x = 2,922.58 × 1,173.61
  4. Step 4: Simplify right side
    2,117.81x = 3,429,951.19
  5. Step 5: Solve for x
    x = 3,429,951.19/2,117.81
  6. Step 6: Final answer
    x = 1,619.57

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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.