Home / 3,890.76-5,367.30-2,317.74

Finding the Fourth Proportional to 3,890.76, 5,367.30 and 2,317.74

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Solution

The fourth proportional to 3,890.76, 5,367.30 and 2,317.74 is: 3,197.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.76 : 5,367.30 = 2,317.74 : x
  2. Step 2: Convert to fraction form
    3,890.76/5,367.30 = 2,317.74/x
  3. Step 3: Cross multiply
    3,890.76x = 5,367.30 × 2,317.74
  4. Step 4: Simplify right side
    3,890.76x = 12,440,005.90
  5. Step 5: Solve for x
    x = 12,440,005.90/3,890.76
  6. Step 6: Final answer
    x = 3,197.32

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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.