Home / 6,818.95-10,228.40-2,138.99

Finding the Fourth Proportional to 6,818.95, 10,228.40 and 2,138.99

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Solution

The fourth proportional to 6,818.95, 10,228.40 and 2,138.99 is: 3,208.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,818.95 : 10,228.40 = 2,138.99 : x
  2. Step 2: Convert to fraction form
    6,818.95/10,228.40 = 2,138.99/x
  3. Step 3: Cross multiply
    6,818.95x = 10,228.40 × 2,138.99
  4. Step 4: Simplify right side
    6,818.95x = 21,878,434.62
  5. Step 5: Solve for x
    x = 21,878,434.62/6,818.95
  6. Step 6: Final answer
    x = 3,208.48

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.