Home / 1,207.55-1,812.60-1,069.62

Finding the Fourth Proportional to 1,207.55, 1,812.60 and 1,069.62

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Solution

The fourth proportional to 1,207.55, 1,812.60 and 1,069.62 is: 1,605.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207.55 : 1,812.60 = 1,069.62 : x
  2. Step 2: Convert to fraction form
    1,207.55/1,812.60 = 1,069.62/x
  3. Step 3: Cross multiply
    1,207.55x = 1,812.60 × 1,069.62
  4. Step 4: Simplify right side
    1,207.55x = 1,938,787.86
  5. Step 5: Solve for x
    x = 1,938,787.86/1,207.55
  6. Step 6: Final answer
    x = 1,605.56

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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.