Home / 2,638.02-3,640.20-1,458.92

Finding the Fourth Proportional to 2,638.02, 3,640.20 and 1,458.92

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Solution

The fourth proportional to 2,638.02, 3,640.20 and 1,458.92 is: 2,013.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.02 : 3,640.20 = 1,458.92 : x
  2. Step 2: Convert to fraction form
    2,638.02/3,640.20 = 1,458.92/x
  3. Step 3: Cross multiply
    2,638.02x = 3,640.20 × 1,458.92
  4. Step 4: Simplify right side
    2,638.02x = 5,310,760.58
  5. Step 5: Solve for x
    x = 5,310,760.58/2,638.02
  6. Step 6: Final answer
    x = 2,013.16

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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.