Home / 5,015.60-6,922.38-2,890.75

Finding the Fourth Proportional to 5,015.60, 6,922.38 and 2,890.75

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Solution

The fourth proportional to 5,015.60, 6,922.38 and 2,890.75 is: 3,989.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,015.60 : 6,922.38 = 2,890.75 : x
  2. Step 2: Convert to fraction form
    5,015.60/6,922.38 = 2,890.75/x
  3. Step 3: Cross multiply
    5,015.60x = 6,922.38 × 2,890.75
  4. Step 4: Simplify right side
    5,015.60x = 20,010,840.77
  5. Step 5: Solve for x
    x = 20,010,840.77/5,015.60
  6. Step 6: Final answer
    x = 3,989.72

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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.