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Finding the Fourth Proportional to 7,099.53, 10,648.49 and 1,905.81

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Solution

The fourth proportional to 7,099.53, 10,648.49 and 1,905.81 is: 2,858.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,099.53 : 10,648.49 = 1,905.81 : x
  2. Step 2: Convert to fraction form
    7,099.53/10,648.49 = 1,905.81/x
  3. Step 3: Cross multiply
    7,099.53x = 10,648.49 × 1,905.81
  4. Step 4: Simplify right side
    7,099.53x = 20,293,989.20
  5. Step 5: Solve for x
    x = 20,293,989.20/7,099.53
  6. Step 6: Final answer
    x = 2,858.50

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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.