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Finding the Fourth Proportional to 3,903.45, 5,853.48 and 1,129.47

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Solution

The fourth proportional to 3,903.45, 5,853.48 and 1,129.47 is: 1,693.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.45 : 5,853.48 = 1,129.47 : x
  2. Step 2: Convert to fraction form
    3,903.45/5,853.48 = 1,129.47/x
  3. Step 3: Cross multiply
    3,903.45x = 5,853.48 × 1,129.47
  4. Step 4: Simplify right side
    3,903.45x = 6,611,330.06
  5. Step 5: Solve for x
    x = 6,611,330.06/3,903.45
  6. Step 6: Final answer
    x = 1,693.71

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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.