Home / 2,290.58-3,161.00-1,242.63

Finding the Fourth Proportional to 2,290.58, 3,161.00 and 1,242.63

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Solution

The fourth proportional to 2,290.58, 3,161.00 and 1,242.63 is: 1,714.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.58 : 3,161.00 = 1,242.63 : x
  2. Step 2: Convert to fraction form
    2,290.58/3,161.00 = 1,242.63/x
  3. Step 3: Cross multiply
    2,290.58x = 3,161.00 × 1,242.63
  4. Step 4: Simplify right side
    2,290.58x = 3,927,947.22
  5. Step 5: Solve for x
    x = 3,927,947.22/2,290.58
  6. Step 6: Final answer
    x = 1,714.83

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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.