Home / 2,173.60-2,999.56-1,178.91

Finding the Fourth Proportional to 2,173.60, 2,999.56 and 1,178.91

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Solution

The fourth proportional to 2,173.60, 2,999.56 and 1,178.91 is: 1,626.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,173.60 : 2,999.56 = 1,178.91 : x
  2. Step 2: Convert to fraction form
    2,173.60/2,999.56 = 1,178.91/x
  3. Step 3: Cross multiply
    2,173.60x = 2,999.56 × 1,178.91
  4. Step 4: Simplify right side
    2,173.60x = 3,536,211.28
  5. Step 5: Solve for x
    x = 3,536,211.28/2,173.60
  6. Step 6: Final answer
    x = 1,626.89

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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.