Home / 2,639.51-3,638.34-2,079.09

Finding the Fourth Proportional to 2,639.51, 3,638.34 and 2,079.09

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Solution

The fourth proportional to 2,639.51, 3,638.34 and 2,079.09 is: 2,865.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.51 : 3,638.34 = 2,079.09 : x
  2. Step 2: Convert to fraction form
    2,639.51/3,638.34 = 2,079.09/x
  3. Step 3: Cross multiply
    2,639.51x = 3,638.34 × 2,079.09
  4. Step 4: Simplify right side
    2,639.51x = 7,564,425.92
  5. Step 5: Solve for x
    x = 7,564,425.92/2,639.51
  6. Step 6: Final answer
    x = 2,865.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.