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Finding the Fourth Proportional to 1,746.48, 2,616 and 879.12

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Solution

The fourth proportional to 1,746.48, 2,616 and 879.12 is: 1,316.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,746.48 : 2,616 = 879.12 : x
  2. Step 2: Convert to fraction form
    1,746.48/2,616 = 879.12/x
  3. Step 3: Cross multiply
    1,746.48x = 2,616 × 879.12
  4. Step 4: Simplify right side
    1,746.48x = 2,299,777.92
  5. Step 5: Solve for x
    x = 2,299,777.92/1,746.48
  6. Step 6: Final answer
    x = 1,316.81

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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.