Home / 8,121.37-12,182.14-2,856.53

Finding the Fourth Proportional to 8,121.37, 12,182.14 and 2,856.53

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Solution

The fourth proportional to 8,121.37, 12,182.14 and 2,856.53 is: 4,284.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.37 : 12,182.14 = 2,856.53 : x
  2. Step 2: Convert to fraction form
    8,121.37/12,182.14 = 2,856.53/x
  3. Step 3: Cross multiply
    8,121.37x = 12,182.14 × 2,856.53
  4. Step 4: Simplify right side
    8,121.37x = 34,798,587.46
  5. Step 5: Solve for x
    x = 34,798,587.46/8,121.37
  6. Step 6: Final answer
    x = 4,284.82

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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.