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Finding the Fourth Proportional to 1,579.85, 2,369.26 and 746.79

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Solution

The fourth proportional to 1,579.85, 2,369.26 and 746.79 is: 1,119.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.85 : 2,369.26 = 746.79 : x
  2. Step 2: Convert to fraction form
    1,579.85/2,369.26 = 746.79/x
  3. Step 3: Cross multiply
    1,579.85x = 2,369.26 × 746.79
  4. Step 4: Simplify right side
    1,579.85x = 1,769,331.72
  5. Step 5: Solve for x
    x = 1,769,331.72/1,579.85
  6. Step 6: Final answer
    x = 1,119.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.