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Finding the Fourth Proportional to 7,301.57, 10,076.16 and 3,989.57

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Solution

The fourth proportional to 7,301.57, 10,076.16 and 3,989.57 is: 5,505.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,301.57 : 10,076.16 = 3,989.57 : x
  2. Step 2: Convert to fraction form
    7,301.57/10,076.16 = 3,989.57/x
  3. Step 3: Cross multiply
    7,301.57x = 10,076.16 × 3,989.57
  4. Step 4: Simplify right side
    7,301.57x = 40,199,495.27
  5. Step 5: Solve for x
    x = 40,199,495.27/7,301.57
  6. Step 6: Final answer
    x = 5,505.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.