Home / 3,943.78-5,915.67-1,605.06

Finding the Fourth Proportional to 3,943.78, 5,915.67 and 1,605.06

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Solution

The fourth proportional to 3,943.78, 5,915.67 and 1,605.06 is: 2,407.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.78 : 5,915.67 = 1,605.06 : x
  2. Step 2: Convert to fraction form
    3,943.78/5,915.67 = 1,605.06/x
  3. Step 3: Cross multiply
    3,943.78x = 5,915.67 × 1,605.06
  4. Step 4: Simplify right side
    3,943.78x = 9,495,005.29
  5. Step 5: Solve for x
    x = 9,495,005.29/3,943.78
  6. Step 6: Final answer
    x = 2,407.59

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.