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Finding the Fourth Proportional to 3,119.22, 4,689.63 and 2,916.18

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Solution

The fourth proportional to 3,119.22, 4,689.63 and 2,916.18 is: 4,384.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.22 : 4,689.63 = 2,916.18 : x
  2. Step 2: Convert to fraction form
    3,119.22/4,689.63 = 2,916.18/x
  3. Step 3: Cross multiply
    3,119.22x = 4,689.63 × 2,916.18
  4. Step 4: Simplify right side
    3,119.22x = 13,675,805.21
  5. Step 5: Solve for x
    x = 13,675,805.21/3,119.22
  6. Step 6: Final answer
    x = 4,384.37

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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.