Home / 4,742.90-7,114.20-2,145.84

Finding the Fourth Proportional to 4,742.90, 7,114.20 and 2,145.84

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Solution

The fourth proportional to 4,742.90, 7,114.20 and 2,145.84 is: 3,218.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,742.90 : 7,114.20 = 2,145.84 : x
  2. Step 2: Convert to fraction form
    4,742.90/7,114.20 = 2,145.84/x
  3. Step 3: Cross multiply
    4,742.90x = 7,114.20 × 2,145.84
  4. Step 4: Simplify right side
    4,742.90x = 15,265,934.93
  5. Step 5: Solve for x
    x = 15,265,934.93/4,742.90
  6. Step 6: Final answer
    x = 3,218.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.