Home / 3,112.46-4,290.32-2,116.01

Finding the Fourth Proportional to 3,112.46, 4,290.32 and 2,116.01

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Solution

The fourth proportional to 3,112.46, 4,290.32 and 2,116.01 is: 2,916.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.46 : 4,290.32 = 2,116.01 : x
  2. Step 2: Convert to fraction form
    3,112.46/4,290.32 = 2,116.01/x
  3. Step 3: Cross multiply
    3,112.46x = 4,290.32 × 2,116.01
  4. Step 4: Simplify right side
    3,112.46x = 9,078,327.99
  5. Step 5: Solve for x
    x = 9,078,327.99/3,112.46
  6. Step 6: Final answer
    x = 2,916.77

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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.