Home / 2,290.56-3,161.28-1,359.12

Finding the Fourth Proportional to 2,290.56, 3,161.28 and 1,359.12

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Solution

The fourth proportional to 2,290.56, 3,161.28 and 1,359.12 is: 1,875.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.56 : 3,161.28 = 1,359.12 : x
  2. Step 2: Convert to fraction form
    2,290.56/3,161.28 = 1,359.12/x
  3. Step 3: Cross multiply
    2,290.56x = 3,161.28 × 1,359.12
  4. Step 4: Simplify right side
    2,290.56x = 4,296,558.87
  5. Step 5: Solve for x
    x = 4,296,558.87/2,290.56
  6. Step 6: Final answer
    x = 1,875.77

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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.