Home / 2,742.12-3,784.22-1,500.12

Finding the Fourth Proportional to 2,742.12, 3,784.22 and 1,500.12

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Solution

The fourth proportional to 2,742.12, 3,784.22 and 1,500.12 is: 2,070.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.12 : 3,784.22 = 1,500.12 : x
  2. Step 2: Convert to fraction form
    2,742.12/3,784.22 = 1,500.12/x
  3. Step 3: Cross multiply
    2,742.12x = 3,784.22 × 1,500.12
  4. Step 4: Simplify right side
    2,742.12x = 5,676,784.11
  5. Step 5: Solve for x
    x = 5,676,784.11/2,742.12
  6. Step 6: Final answer
    x = 2,070.22

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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.