Home / 8,426.12-12,639.18-2,270.12

Finding the Fourth Proportional to 8,426.12, 12,639.18 and 2,270.12

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Solution

The fourth proportional to 8,426.12, 12,639.18 and 2,270.12 is: 3,405.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,426.12 : 12,639.18 = 2,270.12 : x
  2. Step 2: Convert to fraction form
    8,426.12/12,639.18 = 2,270.12/x
  3. Step 3: Cross multiply
    8,426.12x = 12,639.18 × 2,270.12
  4. Step 4: Simplify right side
    8,426.12x = 28,692,455.30
  5. Step 5: Solve for x
    x = 28,692,455.30/8,426.12
  6. Step 6: Final answer
    x = 3,405.18

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