Home / 1,209.68-1,669.34-1,110.50

Finding the Fourth Proportional to 1,209.68, 1,669.34 and 1,110.50

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Solution

The fourth proportional to 1,209.68, 1,669.34 and 1,110.50 is: 1,532.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209.68 : 1,669.34 = 1,110.50 : x
  2. Step 2: Convert to fraction form
    1,209.68/1,669.34 = 1,110.50/x
  3. Step 3: Cross multiply
    1,209.68x = 1,669.34 × 1,110.50
  4. Step 4: Simplify right side
    1,209.68x = 1,853,802.07
  5. Step 5: Solve for x
    x = 1,853,802.07/1,209.68
  6. Step 6: Final answer
    x = 1,532.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.