Home / 2,290.13-3,160.40-1,242.21

Finding the Fourth Proportional to 2,290.13, 3,160.40 and 1,242.21

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Solution

The fourth proportional to 2,290.13, 3,160.40 and 1,242.21 is: 1,714.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.13 : 3,160.40 = 1,242.21 : x
  2. Step 2: Convert to fraction form
    2,290.13/3,160.40 = 1,242.21/x
  3. Step 3: Cross multiply
    2,290.13x = 3,160.40 × 1,242.21
  4. Step 4: Simplify right side
    2,290.13x = 3,925,874.27
  5. Step 5: Solve for x
    x = 3,925,874.27/2,290.13
  6. Step 6: Final answer
    x = 1,714.26

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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.