Home / 1,176.21-1,616.40-1,143.41

Finding the Fourth Proportional to 1,176.21, 1,616.40 and 1,143.41

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Solution

The fourth proportional to 1,176.21, 1,616.40 and 1,143.41 is: 1,571.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.21 : 1,616.40 = 1,143.41 : x
  2. Step 2: Convert to fraction form
    1,176.21/1,616.40 = 1,143.41/x
  3. Step 3: Cross multiply
    1,176.21x = 1,616.40 × 1,143.41
  4. Step 4: Simplify right side
    1,176.21x = 1,848,199.84
  5. Step 5: Solve for x
    x = 1,848,199.84/1,176.21
  6. Step 6: Final answer
    x = 1,571.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.