Home / 4,078.20-5,629.50-2,681.40

Finding the Fourth Proportional to 4,078.20, 5,629.50 and 2,681.40

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Solution

The fourth proportional to 4,078.20, 5,629.50 and 2,681.40 is: 3,701.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.20 : 5,629.50 = 2,681.40 : x
  2. Step 2: Convert to fraction form
    4,078.20/5,629.50 = 2,681.40/x
  3. Step 3: Cross multiply
    4,078.20x = 5,629.50 × 2,681.40
  4. Step 4: Simplify right side
    4,078.20x = 15,094,941.30
  5. Step 5: Solve for x
    x = 15,094,941.30/4,078.20
  6. Step 6: Final answer
    x = 3,701.37

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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.