Home / 5,155.60-7,114.75-2,797.76

Finding the Fourth Proportional to 5,155.60, 7,114.75 and 2,797.76

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Solution

The fourth proportional to 5,155.60, 7,114.75 and 2,797.76 is: 3,860.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.60 : 7,114.75 = 2,797.76 : x
  2. Step 2: Convert to fraction form
    5,155.60/7,114.75 = 2,797.76/x
  3. Step 3: Cross multiply
    5,155.60x = 7,114.75 × 2,797.76
  4. Step 4: Simplify right side
    5,155.60x = 19,905,362.96
  5. Step 5: Solve for x
    x = 19,905,362.96/5,155.60
  6. Step 6: Final answer
    x = 3,860.92

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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.