Home / 3,557.13-5,336.21-1,911.45

Finding the Fourth Proportional to 3,557.13, 5,336.21 and 1,911.45

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Solution

The fourth proportional to 3,557.13, 5,336.21 and 1,911.45 is: 2,867.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,557.13 : 5,336.21 = 1,911.45 : x
  2. Step 2: Convert to fraction form
    3,557.13/5,336.21 = 1,911.45/x
  3. Step 3: Cross multiply
    3,557.13x = 5,336.21 × 1,911.45
  4. Step 4: Simplify right side
    3,557.13x = 10,199,889.05
  5. Step 5: Solve for x
    x = 10,199,889.05/3,557.13
  6. Step 6: Final answer
    x = 2,867.45

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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.