Home / 3,640.15-5,455.65-1,557.70

Finding the Fourth Proportional to 3,640.15, 5,455.65 and 1,557.70

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Solution

The fourth proportional to 3,640.15, 5,455.65 and 1,557.70 is: 2,334.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.15 : 5,455.65 = 1,557.70 : x
  2. Step 2: Convert to fraction form
    3,640.15/5,455.65 = 1,557.70/x
  3. Step 3: Cross multiply
    3,640.15x = 5,455.65 × 1,557.70
  4. Step 4: Simplify right side
    3,640.15x = 8,498,266.01
  5. Step 5: Solve for x
    x = 8,498,266.01/3,640.15
  6. Step 6: Final answer
    x = 2,334.59

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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.