Home / 3,122.19-4,685.60-1,478.75

Finding the Fourth Proportional to 3,122.19, 4,685.60 and 1,478.75

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Solution

The fourth proportional to 3,122.19, 4,685.60 and 1,478.75 is: 2,219.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.19 : 4,685.60 = 1,478.75 : x
  2. Step 2: Convert to fraction form
    3,122.19/4,685.60 = 1,478.75/x
  3. Step 3: Cross multiply
    3,122.19x = 4,685.60 × 1,478.75
  4. Step 4: Simplify right side
    3,122.19x = 6,928,800.18
  5. Step 5: Solve for x
    x = 6,928,800.18/3,122.19
  6. Step 6: Final answer
    x = 2,219.21

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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.