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Finding the Fourth Proportional to 3,415.20, 4,713.08 and 1,923.08

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Solution

The fourth proportional to 3,415.20, 4,713.08 and 1,923.08 is: 2,653.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.20 : 4,713.08 = 1,923.08 : x
  2. Step 2: Convert to fraction form
    3,415.20/4,713.08 = 1,923.08/x
  3. Step 3: Cross multiply
    3,415.20x = 4,713.08 × 1,923.08
  4. Step 4: Simplify right side
    3,415.20x = 9,063,629.89
  5. Step 5: Solve for x
    x = 9,063,629.89/3,415.20
  6. Step 6: Final answer
    x = 2,653.91

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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.