Home / 3,280.36-4,919.02-1,430.54

Finding the Fourth Proportional to 3,280.36, 4,919.02 and 1,430.54

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Solution

The fourth proportional to 3,280.36, 4,919.02 and 1,430.54 is: 2,145.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.36 : 4,919.02 = 1,430.54 : x
  2. Step 2: Convert to fraction form
    3,280.36/4,919.02 = 1,430.54/x
  3. Step 3: Cross multiply
    3,280.36x = 4,919.02 × 1,430.54
  4. Step 4: Simplify right side
    3,280.36x = 7,036,854.87
  5. Step 5: Solve for x
    x = 7,036,854.87/3,280.36
  6. Step 6: Final answer
    x = 2,145.15

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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.