Home / 8,428.08-12,642.12-3,235.17

Finding the Fourth Proportional to 8,428.08, 12,642.12 and 3,235.17

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Solution

The fourth proportional to 8,428.08, 12,642.12 and 3,235.17 is: 4,852.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.08 : 12,642.12 = 3,235.17 : x
  2. Step 2: Convert to fraction form
    8,428.08/12,642.12 = 3,235.17/x
  3. Step 3: Cross multiply
    8,428.08x = 12,642.12 × 3,235.17
  4. Step 4: Simplify right side
    8,428.08x = 40,899,407.36
  5. Step 5: Solve for x
    x = 40,899,407.36/8,428.08
  6. Step 6: Final answer
    x = 4,852.76

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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.