Home / 3,742.88-5,612.34-1,145.12

Finding the Fourth Proportional to 3,742.88, 5,612.34 and 1,145.12

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Solution

The fourth proportional to 3,742.88, 5,612.34 and 1,145.12 is: 1,717.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,742.88 : 5,612.34 = 1,145.12 : x
  2. Step 2: Convert to fraction form
    3,742.88/5,612.34 = 1,145.12/x
  3. Step 3: Cross multiply
    3,742.88x = 5,612.34 × 1,145.12
  4. Step 4: Simplify right side
    3,742.88x = 6,426,802.78
  5. Step 5: Solve for x
    x = 6,426,802.78/3,742.88
  6. Step 6: Final answer
    x = 1,717.07

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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.