Home / 7,867.40-10,857.12-4,330.76

Finding the Fourth Proportional to 7,867.40, 10,857.12 and 4,330.76

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Solution

The fourth proportional to 7,867.40, 10,857.12 and 4,330.76 is: 5,976.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,867.40 : 10,857.12 = 4,330.76 : x
  2. Step 2: Convert to fraction form
    7,867.40/10,857.12 = 4,330.76/x
  3. Step 3: Cross multiply
    7,867.40x = 10,857.12 × 4,330.76
  4. Step 4: Simplify right side
    7,867.40x = 47,019,581.01
  5. Step 5: Solve for x
    x = 47,019,581.01/7,867.40
  6. Step 6: Final answer
    x = 5,976.51

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Double scale
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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.