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Finding the Fourth Proportional to 7,805.74, 10,775.43 and 4,976.91

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Solution

The fourth proportional to 7,805.74, 10,775.43 and 4,976.91 is: 6,870.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,805.74 : 10,775.43 = 4,976.91 : x
  2. Step 2: Convert to fraction form
    7,805.74/10,775.43 = 4,976.91/x
  3. Step 3: Cross multiply
    7,805.74x = 10,775.43 × 4,976.91
  4. Step 4: Simplify right side
    7,805.74x = 53,628,323.58
  5. Step 5: Solve for x
    x = 53,628,323.58/7,805.74
  6. Step 6: Final answer
    x = 6,870.37

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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.