Home / 1,306.25-1,968.55-1,176.40

Finding the Fourth Proportional to 1,306.25, 1,968.55 and 1,176.40

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Solution

The fourth proportional to 1,306.25, 1,968.55 and 1,176.40 is: 1,772.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306.25 : 1,968.55 = 1,176.40 : x
  2. Step 2: Convert to fraction form
    1,306.25/1,968.55 = 1,176.40/x
  3. Step 3: Cross multiply
    1,306.25x = 1,968.55 × 1,176.40
  4. Step 4: Simplify right side
    1,306.25x = 2,315,786.50
  5. Step 5: Solve for x
    x = 2,315,786.50/1,306.25
  6. Step 6: Final answer
    x = 1,772.85

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.