Home / 8,138.02-12,206.36-2,591.14

Finding the Fourth Proportional to 8,138.02, 12,206.36 and 2,591.14

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Solution

The fourth proportional to 8,138.02, 12,206.36 and 2,591.14 is: 3,886.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.02 : 12,206.36 = 2,591.14 : x
  2. Step 2: Convert to fraction form
    8,138.02/12,206.36 = 2,591.14/x
  3. Step 3: Cross multiply
    8,138.02x = 12,206.36 × 2,591.14
  4. Step 4: Simplify right side
    8,138.02x = 31,628,387.65
  5. Step 5: Solve for x
    x = 31,628,387.65/8,138.02
  6. Step 6: Final answer
    x = 3,886.50

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Half scale
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Double scale
Find fourth proportional to 8,139.02, 12,207.86 and 2,592.14
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.