Home / 2,173.56-2,999.43-1,178.80

Finding the Fourth Proportional to 2,173.56, 2,999.43 and 1,178.80

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Solution

The fourth proportional to 2,173.56, 2,999.43 and 1,178.80 is: 1,626.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,173.56 : 2,999.43 = 1,178.80 : x
  2. Step 2: Convert to fraction form
    2,173.56/2,999.43 = 1,178.80/x
  3. Step 3: Cross multiply
    2,173.56x = 2,999.43 × 1,178.80
  4. Step 4: Simplify right side
    2,173.56x = 3,535,737.46
  5. Step 5: Solve for x
    x = 3,535,737.46/2,173.56
  6. Step 6: Final answer
    x = 1,626.70

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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.