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Finding the Fourth Proportional to 3,128.24, 4,693.24 and 937.08

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Solution

The fourth proportional to 3,128.24, 4,693.24 and 937.08 is: 1,405.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.24 : 4,693.24 = 937.08 : x
  2. Step 2: Convert to fraction form
    3,128.24/4,693.24 = 937.08/x
  3. Step 3: Cross multiply
    3,128.24x = 4,693.24 × 937.08
  4. Step 4: Simplify right side
    3,128.24x = 4,397,941.34
  5. Step 5: Solve for x
    x = 4,397,941.34/3,128.24
  6. Step 6: Final answer
    x = 1,405.88

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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.