Home / 3,081.40-4,623.48-1,438.42

Finding the Fourth Proportional to 3,081.40, 4,623.48 and 1,438.42

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Solution

The fourth proportional to 3,081.40, 4,623.48 and 1,438.42 is: 2,158.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.40 : 4,623.48 = 1,438.42 : x
  2. Step 2: Convert to fraction form
    3,081.40/4,623.48 = 1,438.42/x
  3. Step 3: Cross multiply
    3,081.40x = 4,623.48 × 1,438.42
  4. Step 4: Simplify right side
    3,081.40x = 6,650,506.10
  5. Step 5: Solve for x
    x = 6,650,506.10/3,081.40
  6. Step 6: Final answer
    x = 2,158.27

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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.