Home / 7,943.84-11,918.32-4,784.70

Finding the Fourth Proportional to 7,943.84, 11,918.32 and 4,784.70

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Solution

The fourth proportional to 7,943.84, 11,918.32 and 4,784.70 is: 7,178.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.84 : 11,918.32 = 4,784.70 : x
  2. Step 2: Convert to fraction form
    7,943.84/11,918.32 = 4,784.70/x
  3. Step 3: Cross multiply
    7,943.84x = 11,918.32 × 4,784.70
  4. Step 4: Simplify right side
    7,943.84x = 57,025,585.70
  5. Step 5: Solve for x
    x = 57,025,585.70/7,943.84
  6. Step 6: Final answer
    x = 7,178.59

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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.