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Finding the Fourth Proportional to 3,580.68, 5,371.32 and 983.64

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Solution

The fourth proportional to 3,580.68, 5,371.32 and 983.64 is: 1,475.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,580.68 : 5,371.32 = 983.64 : x
  2. Step 2: Convert to fraction form
    3,580.68/5,371.32 = 983.64/x
  3. Step 3: Cross multiply
    3,580.68x = 5,371.32 × 983.64
  4. Step 4: Simplify right side
    3,580.68x = 5,283,445.20
  5. Step 5: Solve for x
    x = 5,283,445.20/3,580.68
  6. Step 6: Final answer
    x = 1,475.54

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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.