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Finding the Fourth Proportional to 2,933.17, 4,399.76 and 986.74

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Solution

The fourth proportional to 2,933.17, 4,399.76 and 986.74 is: 1,480.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,933.17 : 4,399.76 = 986.74 : x
  2. Step 2: Convert to fraction form
    2,933.17/4,399.76 = 986.74/x
  3. Step 3: Cross multiply
    2,933.17x = 4,399.76 × 986.74
  4. Step 4: Simplify right side
    2,933.17x = 4,341,403.25
  5. Step 5: Solve for x
    x = 4,341,403.25/2,933.17
  6. Step 6: Final answer
    x = 1,480.11

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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.