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Finding the Fourth Proportional to 2,986.40, 4,479.24 and 795.28

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Solution

The fourth proportional to 2,986.40, 4,479.24 and 795.28 is: 1,192.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.40 : 4,479.24 = 795.28 : x
  2. Step 2: Convert to fraction form
    2,986.40/4,479.24 = 795.28/x
  3. Step 3: Cross multiply
    2,986.40x = 4,479.24 × 795.28
  4. Step 4: Simplify right side
    2,986.40x = 3,562,249.99
  5. Step 5: Solve for x
    x = 3,562,249.99/2,986.40
  6. Step 6: Final answer
    x = 1,192.82

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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.