Home / 4,087.60-6,131.40-2,140.40

Finding the Fourth Proportional to 4,087.60, 6,131.40 and 2,140.40

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Solution

The fourth proportional to 4,087.60, 6,131.40 and 2,140.40 is: 3,210.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,087.60 : 6,131.40 = 2,140.40 : x
  2. Step 2: Convert to fraction form
    4,087.60/6,131.40 = 2,140.40/x
  3. Step 3: Cross multiply
    4,087.60x = 6,131.40 × 2,140.40
  4. Step 4: Simplify right side
    4,087.60x = 13,123,648.56
  5. Step 5: Solve for x
    x = 13,123,648.56/4,087.60
  6. Step 6: Final answer
    x = 3,210.60

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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.