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Finding the Fourth Proportional to 5,429.75, 7,493.06 and 2,945.75

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Solution

The fourth proportional to 5,429.75, 7,493.06 and 2,945.75 is: 4,065.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,429.75 : 7,493.06 = 2,945.75 : x
  2. Step 2: Convert to fraction form
    5,429.75/7,493.06 = 2,945.75/x
  3. Step 3: Cross multiply
    5,429.75x = 7,493.06 × 2,945.75
  4. Step 4: Simplify right side
    5,429.75x = 22,072,666.77
  5. Step 5: Solve for x
    x = 22,072,666.77/5,429.75
  6. Step 6: Final answer
    x = 4,065.14

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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.