Home / 2,290.57-3,160.98-1,242.63

Finding the Fourth Proportional to 2,290.57, 3,160.98 and 1,242.63

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Solution

The fourth proportional to 2,290.57, 3,160.98 and 1,242.63 is: 1,714.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.57 : 3,160.98 = 1,242.63 : x
  2. Step 2: Convert to fraction form
    2,290.57/3,160.98 = 1,242.63/x
  3. Step 3: Cross multiply
    2,290.57x = 3,160.98 × 1,242.63
  4. Step 4: Simplify right side
    2,290.57x = 3,927,928.58
  5. Step 5: Solve for x
    x = 3,927,928.58/2,290.57
  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.