Home / 7,872,951.20-11,809,426.80-3,891,639.20

Finding the Fourth Proportional to 7,872,951.20, 11,809,426.80 and 3,891,639.20

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Solution

The fourth proportional to 7,872,951.20, 11,809,426.80 and 3,891,639.20 is: 5,837,458.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872,951.20 : 11,809,426.80 = 3,891,639.20 : x
  2. Step 2: Convert to fraction form
    7,872,951.20/11,809,426.80 = 3,891,639.20/x
  3. Step 3: Cross multiply
    7,872,951.20x = 11,809,426.80 × 3,891,639.20
  4. Step 4: Simplify right side
    7,872,951.20x = 45,958,028,264,410.56
  5. Step 5: Solve for x
    x = 45,958,028,264,410.56/7,872,951.20
  6. Step 6: Final answer
    x = 5,837,458.80

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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.