Home / 3,640.15-5,455.66-1,557.71

Finding the Fourth Proportional to 3,640.15, 5,455.66 and 1,557.71

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Solution

The fourth proportional to 3,640.15, 5,455.66 and 1,557.71 is: 2,334.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.15 : 5,455.66 = 1,557.71 : x
  2. Step 2: Convert to fraction form
    3,640.15/5,455.66 = 1,557.71/x
  3. Step 3: Cross multiply
    3,640.15x = 5,455.66 × 1,557.71
  4. Step 4: Simplify right side
    3,640.15x = 8,498,301.07
  5. Step 5: Solve for x
    x = 8,498,301.07/3,640.15
  6. Step 6: Final answer
    x = 2,334.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.