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Finding the Fourth Proportional to 2,806.84, 3,873.18 and 2,099.16

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Solution

The fourth proportional to 2,806.84, 3,873.18 and 2,099.16 is: 2,896.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,806.84 : 3,873.18 = 2,099.16 : x
  2. Step 2: Convert to fraction form
    2,806.84/3,873.18 = 2,099.16/x
  3. Step 3: Cross multiply
    2,806.84x = 3,873.18 × 2,099.16
  4. Step 4: Simplify right side
    2,806.84x = 8,130,424.53
  5. Step 5: Solve for x
    x = 8,130,424.53/2,806.84
  6. Step 6: Final answer
    x = 2,896.65

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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.