Home / 7,815.51-11,724.93-2,621.25

Finding the Fourth Proportional to 7,815.51, 11,724.93 and 2,621.25

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Solution

The fourth proportional to 7,815.51, 11,724.93 and 2,621.25 is: 3,932.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.51 : 11,724.93 = 2,621.25 : x
  2. Step 2: Convert to fraction form
    7,815.51/11,724.93 = 2,621.25/x
  3. Step 3: Cross multiply
    7,815.51x = 11,724.93 × 2,621.25
  4. Step 4: Simplify right side
    7,815.51x = 30,733,972.76
  5. Step 5: Solve for x
    x = 30,733,972.76/7,815.51
  6. Step 6: Final answer
    x = 3,932.43

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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.