Home / 6,905.40-10,358.10-3,981.30

Finding the Fourth Proportional to 6,905.40, 10,358.10 and 3,981.30

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Solution

The fourth proportional to 6,905.40, 10,358.10 and 3,981.30 is: 5,971.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,905.40 : 10,358.10 = 3,981.30 : x
  2. Step 2: Convert to fraction form
    6,905.40/10,358.10 = 3,981.30/x
  3. Step 3: Cross multiply
    6,905.40x = 10,358.10 × 3,981.30
  4. Step 4: Simplify right side
    6,905.40x = 41,238,703.53
  5. Step 5: Solve for x
    x = 41,238,703.53/6,905.40
  6. Step 6: Final answer
    x = 5,971.95

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Similar ratio
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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.