Home / 2,620.77-3,931.81-2,153.03

Finding the Fourth Proportional to 2,620.77, 3,931.81 and 2,153.03

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Solution

The fourth proportional to 2,620.77, 3,931.81 and 2,153.03 is: 3,230.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.77 : 3,931.81 = 2,153.03 : x
  2. Step 2: Convert to fraction form
    2,620.77/3,931.81 = 2,153.03/x
  3. Step 3: Cross multiply
    2,620.77x = 3,931.81 × 2,153.03
  4. Step 4: Simplify right side
    2,620.77x = 8,465,301.96
  5. Step 5: Solve for x
    x = 8,465,301.96/2,620.77
  6. Step 6: Final answer
    x = 3,230.08

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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.