Home / 1,606.85-2,409.72-1,089.70

Finding the Fourth Proportional to 1,606.85, 2,409.72 and 1,089.70

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Solution

The fourth proportional to 1,606.85, 2,409.72 and 1,089.70 is: 1,634.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,606.85 : 2,409.72 = 1,089.70 : x
  2. Step 2: Convert to fraction form
    1,606.85/2,409.72 = 1,089.70/x
  3. Step 3: Cross multiply
    1,606.85x = 2,409.72 × 1,089.70
  4. Step 4: Simplify right side
    1,606.85x = 2,625,861.77
  5. Step 5: Solve for x
    x = 2,625,861.77/1,606.85
  6. Step 6: Final answer
    x = 1,634.17

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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.