Home / 5,155.21-7,114.14-2,797.35

Finding the Fourth Proportional to 5,155.21, 7,114.14 and 2,797.35

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Solution

The fourth proportional to 5,155.21, 7,114.14 and 2,797.35 is: 3,860.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.21 : 7,114.14 = 2,797.35 : x
  2. Step 2: Convert to fraction form
    5,155.21/7,114.14 = 2,797.35/x
  3. Step 3: Cross multiply
    5,155.21x = 7,114.14 × 2,797.35
  4. Step 4: Simplify right side
    5,155.21x = 19,900,739.53
  5. Step 5: Solve for x
    x = 19,900,739.53/5,155.21
  6. Step 6: Final answer
    x = 3,860.32

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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.