Home / 3,280.26-4,916.40-1,429.20

Finding the Fourth Proportional to 3,280.26, 4,916.40 and 1,429.20

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Solution

The fourth proportional to 3,280.26, 4,916.40 and 1,429.20 is: 2,142.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.26 : 4,916.40 = 1,429.20 : x
  2. Step 2: Convert to fraction form
    3,280.26/4,916.40 = 1,429.20/x
  3. Step 3: Cross multiply
    3,280.26x = 4,916.40 × 1,429.20
  4. Step 4: Simplify right side
    3,280.26x = 7,026,518.88
  5. Step 5: Solve for x
    x = 7,026,518.88/3,280.26
  6. Step 6: Final answer
    x = 2,142.06

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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.