Home / 4,079.76-6,122.71-1,890.02

Finding the Fourth Proportional to 4,079.76, 6,122.71 and 1,890.02

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Solution

The fourth proportional to 4,079.76, 6,122.71 and 1,890.02 is: 2,836.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,079.76 : 6,122.71 = 1,890.02 : x
  2. Step 2: Convert to fraction form
    4,079.76/6,122.71 = 1,890.02/x
  3. Step 3: Cross multiply
    4,079.76x = 6,122.71 × 1,890.02
  4. Step 4: Simplify right side
    4,079.76x = 11,572,044.35
  5. Step 5: Solve for x
    x = 11,572,044.35/4,079.76
  6. Step 6: Final answer
    x = 2,836.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.