Home / 7,819.58-11,728.28-1,975.82

Finding the Fourth Proportional to 7,819.58, 11,728.28 and 1,975.82

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Solution

The fourth proportional to 7,819.58, 11,728.28 and 1,975.82 is: 2,963.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.58 : 11,728.28 = 1,975.82 : x
  2. Step 2: Convert to fraction form
    7,819.58/11,728.28 = 1,975.82/x
  3. Step 3: Cross multiply
    7,819.58x = 11,728.28 × 1,975.82
  4. Step 4: Simplify right side
    7,819.58x = 23,172,970.19
  5. Step 5: Solve for x
    x = 23,172,970.19/7,819.58
  6. Step 6: Final answer
    x = 2,963.45

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1.5x scale

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.