Home / 2,620.12-3,911.87-2,253.40

Finding the Fourth Proportional to 2,620.12, 3,911.87 and 2,253.40

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Solution

The fourth proportional to 2,620.12, 3,911.87 and 2,253.40 is: 3,364.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.12 : 3,911.87 = 2,253.40 : x
  2. Step 2: Convert to fraction form
    2,620.12/3,911.87 = 2,253.40/x
  3. Step 3: Cross multiply
    2,620.12x = 3,911.87 × 2,253.40
  4. Step 4: Simplify right side
    2,620.12x = 8,815,007.86
  5. Step 5: Solve for x
    x = 8,815,007.86/2,620.12
  6. Step 6: Final answer
    x = 3,364.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.