Home / 7,921.22-10,931.09-4,336.16

Finding the Fourth Proportional to 7,921.22, 10,931.09 and 4,336.16

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Solution

The fourth proportional to 7,921.22, 10,931.09 and 4,336.16 is: 5,983.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.22 : 10,931.09 = 4,336.16 : x
  2. Step 2: Convert to fraction form
    7,921.22/10,931.09 = 4,336.16/x
  3. Step 3: Cross multiply
    7,921.22x = 10,931.09 × 4,336.16
  4. Step 4: Simplify right side
    7,921.22x = 47,398,878.88
  5. Step 5: Solve for x
    x = 47,398,878.88/7,921.22
  6. Step 6: Final answer
    x = 5,983.79

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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.