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Finding the Fourth Proportional to 2,889.30, 3,986.16 and 1,895.13

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Solution

The fourth proportional to 2,889.30, 3,986.16 and 1,895.13 is: 2,614.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.30 : 3,986.16 = 1,895.13 : x
  2. Step 2: Convert to fraction form
    2,889.30/3,986.16 = 1,895.13/x
  3. Step 3: Cross multiply
    2,889.30x = 3,986.16 × 1,895.13
  4. Step 4: Simplify right side
    2,889.30x = 7,554,291.40
  5. Step 5: Solve for x
    x = 7,554,291.40/2,889.30
  6. Step 6: Final answer
    x = 2,614.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.