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Finding the Fourth Proportional to 2,099.84, 3,148.68 and 867.02

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Solution

The fourth proportional to 2,099.84, 3,148.68 and 867.02 is: 1,300.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,099.84 : 3,148.68 = 867.02 : x
  2. Step 2: Convert to fraction form
    2,099.84/3,148.68 = 867.02/x
  3. Step 3: Cross multiply
    2,099.84x = 3,148.68 × 867.02
  4. Step 4: Simplify right side
    2,099.84x = 2,729,968.53
  5. Step 5: Solve for x
    x = 2,729,968.53/2,099.84
  6. Step 6: Final answer
    x = 1,300.08

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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.