Home / 2,639.43-3,622.29-2,390.22

Finding the Fourth Proportional to 2,639.43, 3,622.29 and 2,390.22

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Solution

The fourth proportional to 2,639.43, 3,622.29 and 2,390.22 is: 3,280.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.43 : 3,622.29 = 2,390.22 : x
  2. Step 2: Convert to fraction form
    2,639.43/3,622.29 = 2,390.22/x
  3. Step 3: Cross multiply
    2,639.43x = 3,622.29 × 2,390.22
  4. Step 4: Simplify right side
    2,639.43x = 8,658,070.00
  5. Step 5: Solve for x
    x = 8,658,070.00/2,639.43
  6. Step 6: Final answer
    x = 3,280.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.