Home / 3,685.19-5,086.28-2,192.81

Finding the Fourth Proportional to 3,685.19, 5,086.28 and 2,192.81

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Solution

The fourth proportional to 3,685.19, 5,086.28 and 2,192.81 is: 3,026.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.19 : 5,086.28 = 2,192.81 : x
  2. Step 2: Convert to fraction form
    3,685.19/5,086.28 = 2,192.81/x
  3. Step 3: Cross multiply
    3,685.19x = 5,086.28 × 2,192.81
  4. Step 4: Simplify right side
    3,685.19x = 11,153,225.70
  5. Step 5: Solve for x
    x = 11,153,225.70/3,685.19
  6. Step 6: Final answer
    x = 3,026.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.