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Finding the Fourth Proportional to 5,235.44, 7,851.14 and 1,947.79

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Solution

The fourth proportional to 5,235.44, 7,851.14 and 1,947.79 is: 2,920.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,235.44 : 7,851.14 = 1,947.79 : x
  2. Step 2: Convert to fraction form
    5,235.44/7,851.14 = 1,947.79/x
  3. Step 3: Cross multiply
    5,235.44x = 7,851.14 × 1,947.79
  4. Step 4: Simplify right side
    5,235.44x = 15,292,322.99
  5. Step 5: Solve for x
    x = 15,292,322.99/5,235.44
  6. Step 6: Final answer
    x = 2,920.92

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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.