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Finding the Fourth Proportional to 3,505.41, 5,256.90 and 1,040.31

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Solution

The fourth proportional to 3,505.41, 5,256.90 and 1,040.31 is: 1,560.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,505.41 : 5,256.90 = 1,040.31 : x
  2. Step 2: Convert to fraction form
    3,505.41/5,256.90 = 1,040.31/x
  3. Step 3: Cross multiply
    3,505.41x = 5,256.90 × 1,040.31
  4. Step 4: Simplify right side
    3,505.41x = 5,468,805.64
  5. Step 5: Solve for x
    x = 5,468,805.64/3,505.41
  6. Step 6: Final answer
    x = 1,560.10

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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.