Home / 8,119.17-12,178.59-2,275.63

Finding the Fourth Proportional to 8,119.17, 12,178.59 and 2,275.63

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Solution

The fourth proportional to 8,119.17, 12,178.59 and 2,275.63 is: 3,413.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.17 : 12,178.59 = 2,275.63 : x
  2. Step 2: Convert to fraction form
    8,119.17/12,178.59 = 2,275.63/x
  3. Step 3: Cross multiply
    8,119.17x = 12,178.59 × 2,275.63
  4. Step 4: Simplify right side
    8,119.17x = 27,713,925.78
  5. Step 5: Solve for x
    x = 27,713,925.78/8,119.17
  6. Step 6: Final answer
    x = 3,413.39

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Half scale
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Double scale
Find fourth proportional to 8,120.17, 12,180.09 and 2,276.63
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.