Home / 5,155.65-7,114.81-2,797.79

Finding the Fourth Proportional to 5,155.65, 7,114.81 and 2,797.79

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Solution

The fourth proportional to 5,155.65, 7,114.81 and 2,797.79 is: 3,860.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.65 : 7,114.81 = 2,797.79 : x
  2. Step 2: Convert to fraction form
    5,155.65/7,114.81 = 2,797.79/x
  3. Step 3: Cross multiply
    5,155.65x = 7,114.81 × 2,797.79
  4. Step 4: Simplify right side
    5,155.65x = 19,905,708.70
  5. Step 5: Solve for x
    x = 19,905,708.70/5,155.65
  6. Step 6: Final answer
    x = 3,860.95

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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.