Home / 7,090.74-9,785.20-3,946.92

Finding the Fourth Proportional to 7,090.74, 9,785.20 and 3,946.92

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Solution

The fourth proportional to 7,090.74, 9,785.20 and 3,946.92 is: 5,446.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,090.74 : 9,785.20 = 3,946.92 : x
  2. Step 2: Convert to fraction form
    7,090.74/9,785.20 = 3,946.92/x
  3. Step 3: Cross multiply
    7,090.74x = 9,785.20 × 3,946.92
  4. Step 4: Simplify right side
    7,090.74x = 38,621,401.58
  5. Step 5: Solve for x
    x = 38,621,401.58/7,090.74
  6. Step 6: Final answer
    x = 5,446.74

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Half scale
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Double scale
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Similar ratio
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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.