Home / 2,431.70-3,639.45-2,140.10

Finding the Fourth Proportional to 2,431.70, 3,639.45 and 2,140.10

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Solution

The fourth proportional to 2,431.70, 3,639.45 and 2,140.10 is: 3,203.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.70 : 3,639.45 = 2,140.10 : x
  2. Step 2: Convert to fraction form
    2,431.70/3,639.45 = 2,140.10/x
  3. Step 3: Cross multiply
    2,431.70x = 3,639.45 × 2,140.10
  4. Step 4: Simplify right side
    2,431.70x = 7,788,786.95
  5. Step 5: Solve for x
    x = 7,788,786.95/2,431.70
  6. Step 6: Final answer
    x = 3,203.02

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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.