Home / 5,411.77-8,120.90-1,949.29

Finding the Fourth Proportional to 5,411.77, 8,120.90 and 1,949.29

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Solution

The fourth proportional to 5,411.77, 8,120.90 and 1,949.29 is: 2,925.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,411.77 : 8,120.90 = 1,949.29 : x
  2. Step 2: Convert to fraction form
    5,411.77/8,120.90 = 1,949.29/x
  3. Step 3: Cross multiply
    5,411.77x = 8,120.90 × 1,949.29
  4. Step 4: Simplify right side
    5,411.77x = 15,829,989.16
  5. Step 5: Solve for x
    x = 15,829,989.16/5,411.77
  6. Step 6: Final answer
    x = 2,925.10

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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.