Home / 2,836.02-3,913.45-1,640.80

Finding the Fourth Proportional to 2,836.02, 3,913.45 and 1,640.80

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Solution

The fourth proportional to 2,836.02, 3,913.45 and 1,640.80 is: 2,264.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,836.02 : 3,913.45 = 1,640.80 : x
  2. Step 2: Convert to fraction form
    2,836.02/3,913.45 = 1,640.80/x
  3. Step 3: Cross multiply
    2,836.02x = 3,913.45 × 1,640.80
  4. Step 4: Simplify right side
    2,836.02x = 6,421,188.76
  5. Step 5: Solve for x
    x = 6,421,188.76/2,836.02
  6. Step 6: Final answer
    x = 2,264.15

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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.