Home / 3,555.09-5,332.48-1,089.78

Finding the Fourth Proportional to 3,555.09, 5,332.48 and 1,089.78

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Solution

The fourth proportional to 3,555.09, 5,332.48 and 1,089.78 is: 1,634.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,555.09 : 5,332.48 = 1,089.78 : x
  2. Step 2: Convert to fraction form
    3,555.09/5,332.48 = 1,089.78/x
  3. Step 3: Cross multiply
    3,555.09x = 5,332.48 × 1,089.78
  4. Step 4: Simplify right side
    3,555.09x = 5,811,228.46
  5. Step 5: Solve for x
    x = 5,811,228.46/3,555.09
  6. Step 6: Final answer
    x = 1,634.62

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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.