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Finding the Fourth Proportional to 3,743.88, 5,615.81 and 970.32

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Solution

The fourth proportional to 3,743.88, 5,615.81 and 970.32 is: 1,455.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,743.88 : 5,615.81 = 970.32 : x
  2. Step 2: Convert to fraction form
    3,743.88/5,615.81 = 970.32/x
  3. Step 3: Cross multiply
    3,743.88x = 5,615.81 × 970.32
  4. Step 4: Simplify right side
    3,743.88x = 5,449,127.91
  5. Step 5: Solve for x
    x = 5,449,127.91/3,743.88
  6. Step 6: Final answer
    x = 1,455.48

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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.