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Finding the Fourth Proportional to 3,872.77, 5,807.98 and 1,099.67

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Solution

The fourth proportional to 3,872.77, 5,807.98 and 1,099.67 is: 1,649.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,872.77 : 5,807.98 = 1,099.67 : x
  2. Step 2: Convert to fraction form
    3,872.77/5,807.98 = 1,099.67/x
  3. Step 3: Cross multiply
    3,872.77x = 5,807.98 × 1,099.67
  4. Step 4: Simplify right side
    3,872.77x = 6,386,829.58
  5. Step 5: Solve for x
    x = 6,386,829.58/3,872.77
  6. Step 6: Final answer
    x = 1,649.16

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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.