Home / 7,428.39-11,142.83-2,749.57

Finding the Fourth Proportional to 7,428.39, 11,142.83 and 2,749.57

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Solution

The fourth proportional to 7,428.39, 11,142.83 and 2,749.57 is: 4,124.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.39 : 11,142.83 = 2,749.57 : x
  2. Step 2: Convert to fraction form
    7,428.39/11,142.83 = 2,749.57/x
  3. Step 3: Cross multiply
    7,428.39x = 11,142.83 × 2,749.57
  4. Step 4: Simplify right side
    7,428.39x = 30,637,970.10
  5. Step 5: Solve for x
    x = 30,637,970.10/7,428.39
  6. Step 6: Final answer
    x = 4,124.44

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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.