Home / 7,161,921.72-9,883,423.98-3,898,917.72

Finding the Fourth Proportional to 7,161,921.72, 9,883,423.98 and 3,898,917.72

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Solution

The fourth proportional to 7,161,921.72, 9,883,423.98 and 3,898,917.72 is: 5,380,491.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,161,921.72 : 9,883,423.98 = 3,898,917.72 : x
  2. Step 2: Convert to fraction form
    7,161,921.72/9,883,423.98 = 3,898,917.72/x
  3. Step 3: Cross multiply
    7,161,921.72x = 9,883,423.98 × 3,898,917.72
  4. Step 4: Simplify right side
    7,161,921.72x = 38,534,656,889,894.93
  5. Step 5: Solve for x
    x = 38,534,656,889,894.93/7,161,921.72
  6. Step 6: Final answer
    x = 5,380,491.21

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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.