Home / 2,290.34-3,160.64-1,242.40

Finding the Fourth Proportional to 2,290.34, 3,160.64 and 1,242.40

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Solution

The fourth proportional to 2,290.34, 3,160.64 and 1,242.40 is: 1,714.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.34 : 3,160.64 = 1,242.40 : x
  2. Step 2: Convert to fraction form
    2,290.34/3,160.64 = 1,242.40/x
  3. Step 3: Cross multiply
    2,290.34x = 3,160.64 × 1,242.40
  4. Step 4: Simplify right side
    2,290.34x = 3,926,763.33
  5. Step 5: Solve for x
    x = 3,926,763.33/2,290.34
  6. Step 6: Final answer
    x = 1,714.49

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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.