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Finding the Fourth Proportional to 2,447.83, 3,671.88 and 986.80

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Solution

The fourth proportional to 2,447.83, 3,671.88 and 986.80 is: 1,480.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,447.83 : 3,671.88 = 986.80 : x
  2. Step 2: Convert to fraction form
    2,447.83/3,671.88 = 986.80/x
  3. Step 3: Cross multiply
    2,447.83x = 3,671.88 × 986.80
  4. Step 4: Simplify right side
    2,447.83x = 3,623,411.18
  5. Step 5: Solve for x
    x = 3,623,411.18/2,447.83
  6. Step 6: Final answer
    x = 1,480.25

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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.