Home / 4,188.08-6,282.12-1,990.14

Finding the Fourth Proportional to 4,188.08, 6,282.12 and 1,990.14

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Solution

The fourth proportional to 4,188.08, 6,282.12 and 1,990.14 is: 2,985.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,188.08 : 6,282.12 = 1,990.14 : x
  2. Step 2: Convert to fraction form
    4,188.08/6,282.12 = 1,990.14/x
  3. Step 3: Cross multiply
    4,188.08x = 6,282.12 × 1,990.14
  4. Step 4: Simplify right side
    4,188.08x = 12,502,298.30
  5. Step 5: Solve for x
    x = 12,502,298.30/4,188.08
  6. Step 6: Final answer
    x = 2,985.21

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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.