Home / 2,290.09-3,160.35-1,242.16

Finding the Fourth Proportional to 2,290.09, 3,160.35 and 1,242.16

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Solution

The fourth proportional to 2,290.09, 3,160.35 and 1,242.16 is: 1,714.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.09 : 3,160.35 = 1,242.16 : x
  2. Step 2: Convert to fraction form
    2,290.09/3,160.35 = 1,242.16/x
  3. Step 3: Cross multiply
    2,290.09x = 3,160.35 × 1,242.16
  4. Step 4: Simplify right side
    2,290.09x = 3,925,660.36
  5. Step 5: Solve for x
    x = 3,925,660.36/2,290.09
  6. Step 6: Final answer
    x = 1,714.19

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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.