Home / 7,943.76-11,921.13-2,749.64

Finding the Fourth Proportional to 7,943.76, 11,921.13 and 2,749.64

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Solution

The fourth proportional to 7,943.76, 11,921.13 and 2,749.64 is: 4,126.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.76 : 11,921.13 = 2,749.64 : x
  2. Step 2: Convert to fraction form
    7,943.76/11,921.13 = 2,749.64/x
  3. Step 3: Cross multiply
    7,943.76x = 11,921.13 × 2,749.64
  4. Step 4: Simplify right side
    7,943.76x = 32,778,756.29
  5. Step 5: Solve for x
    x = 32,778,756.29/7,943.76
  6. Step 6: Final answer
    x = 4,126.35

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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.