Home / 2,629.40-3,627.14-1,635.21

Finding the Fourth Proportional to 2,629.40, 3,627.14 and 1,635.21

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Solution

The fourth proportional to 2,629.40, 3,627.14 and 1,635.21 is: 2,255.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.40 : 3,627.14 = 1,635.21 : x
  2. Step 2: Convert to fraction form
    2,629.40/3,627.14 = 1,635.21/x
  3. Step 3: Cross multiply
    2,629.40x = 3,627.14 × 1,635.21
  4. Step 4: Simplify right side
    2,629.40x = 5,931,127.42
  5. Step 5: Solve for x
    x = 5,931,127.42/2,629.40
  6. Step 6: Final answer
    x = 2,255.70

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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.