Home / 1,776.88-2,451.58-1,147.78

Finding the Fourth Proportional to 1,776.88, 2,451.58 and 1,147.78

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Solution

The fourth proportional to 1,776.88, 2,451.58 and 1,147.78 is: 1,583.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,776.88 : 2,451.58 = 1,147.78 : x
  2. Step 2: Convert to fraction form
    1,776.88/2,451.58 = 1,147.78/x
  3. Step 3: Cross multiply
    1,776.88x = 2,451.58 × 1,147.78
  4. Step 4: Simplify right side
    1,776.88x = 2,813,874.49
  5. Step 5: Solve for x
    x = 2,813,874.49/1,776.88
  6. Step 6: Final answer
    x = 1,583.60

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1.5x scale

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.