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Finding the Fourth Proportional to 3,108.61, 4,662.93 and 1,259.76

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Solution

The fourth proportional to 3,108.61, 4,662.93 and 1,259.76 is: 1,889.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.61 : 4,662.93 = 1,259.76 : x
  2. Step 2: Convert to fraction form
    3,108.61/4,662.93 = 1,259.76/x
  3. Step 3: Cross multiply
    3,108.61x = 4,662.93 × 1,259.76
  4. Step 4: Simplify right side
    3,108.61x = 5,874,166.40
  5. Step 5: Solve for x
    x = 5,874,166.40/3,108.61
  6. Step 6: Final answer
    x = 1,889.64

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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.