Home / 2,907.20-4,011.62-1,728.12

Finding the Fourth Proportional to 2,907.20, 4,011.62 and 1,728.12

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Solution

The fourth proportional to 2,907.20, 4,011.62 and 1,728.12 is: 2,384.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,907.20 : 4,011.62 = 1,728.12 : x
  2. Step 2: Convert to fraction form
    2,907.20/4,011.62 = 1,728.12/x
  3. Step 3: Cross multiply
    2,907.20x = 4,011.62 × 1,728.12
  4. Step 4: Simplify right side
    2,907.20x = 6,932,560.75
  5. Step 5: Solve for x
    x = 6,932,560.75/2,907.20
  6. Step 6: Final answer
    x = 2,384.62

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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.