Home / 3,081.90-4,624.37-1,438.21

Finding the Fourth Proportional to 3,081.90, 4,624.37 and 1,438.21

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Solution

The fourth proportional to 3,081.90, 4,624.37 and 1,438.21 is: 2,158.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.90 : 4,624.37 = 1,438.21 : x
  2. Step 2: Convert to fraction form
    3,081.90/4,624.37 = 1,438.21/x
  3. Step 3: Cross multiply
    3,081.90x = 4,624.37 × 1,438.21
  4. Step 4: Simplify right side
    3,081.90x = 6,650,784.86
  5. Step 5: Solve for x
    x = 6,650,784.86/3,081.90
  6. Step 6: Final answer
    x = 2,158.01

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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.