Home / 3,280.89-4,921.28-1,965.01

Finding the Fourth Proportional to 3,280.89, 4,921.28 and 1,965.01

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Solution

The fourth proportional to 3,280.89, 4,921.28 and 1,965.01 is: 2,947.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.89 : 4,921.28 = 1,965.01 : x
  2. Step 2: Convert to fraction form
    3,280.89/4,921.28 = 1,965.01/x
  3. Step 3: Cross multiply
    3,280.89x = 4,921.28 × 1,965.01
  4. Step 4: Simplify right side
    3,280.89x = 9,670,364.41
  5. Step 5: Solve for x
    x = 9,670,364.41/3,280.89
  6. Step 6: Final answer
    x = 2,947.48

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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.