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Finding the Fourth Proportional to 2,389.40, 3,297.40 and 1,341.48

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Solution

The fourth proportional to 2,389.40, 3,297.40 and 1,341.48 is: 1,851.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.40 : 3,297.40 = 1,341.48 : x
  2. Step 2: Convert to fraction form
    2,389.40/3,297.40 = 1,341.48/x
  3. Step 3: Cross multiply
    2,389.40x = 3,297.40 × 1,341.48
  4. Step 4: Simplify right side
    2,389.40x = 4,423,396.15
  5. Step 5: Solve for x
    x = 4,423,396.15/2,389.40
  6. Step 6: Final answer
    x = 1,851.26

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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.