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Finding the Fourth Proportional to 2,986.07, 4,479.13 and 906.05

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Solution

The fourth proportional to 2,986.07, 4,479.13 and 906.05 is: 1,359.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.07 : 4,479.13 = 906.05 : x
  2. Step 2: Convert to fraction form
    2,986.07/4,479.13 = 906.05/x
  3. Step 3: Cross multiply
    2,986.07x = 4,479.13 × 906.05
  4. Step 4: Simplify right side
    2,986.07x = 4,058,328.07
  5. Step 5: Solve for x
    x = 4,058,328.07/2,986.07
  6. Step 6: Final answer
    x = 1,359.09

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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.