Home / 2,640.02-3,643.23-1,520.95

Finding the Fourth Proportional to 2,640.02, 3,643.23 and 1,520.95

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Solution

The fourth proportional to 2,640.02, 3,643.23 and 1,520.95 is: 2,098.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.02 : 3,643.23 = 1,520.95 : x
  2. Step 2: Convert to fraction form
    2,640.02/3,643.23 = 1,520.95/x
  3. Step 3: Cross multiply
    2,640.02x = 3,643.23 × 1,520.95
  4. Step 4: Simplify right side
    2,640.02x = 5,541,185.41
  5. Step 5: Solve for x
    x = 5,541,185.41/2,640.02
  6. Step 6: Final answer
    x = 2,098.91

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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.