Home / 3,078.55-4,247.02-1,900.29

Finding the Fourth Proportional to 3,078.55, 4,247.02 and 1,900.29

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Solution

The fourth proportional to 3,078.55, 4,247.02 and 1,900.29 is: 2,621.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.55 : 4,247.02 = 1,900.29 : x
  2. Step 2: Convert to fraction form
    3,078.55/4,247.02 = 1,900.29/x
  3. Step 3: Cross multiply
    3,078.55x = 4,247.02 × 1,900.29
  4. Step 4: Simplify right side
    3,078.55x = 8,070,569.64
  5. Step 5: Solve for x
    x = 8,070,569.64/3,078.55
  6. Step 6: Final answer
    x = 2,621.55

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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.