Home / 7,912.61-10,919.78-4,556.51

Finding the Fourth Proportional to 7,912.61, 10,919.78 and 4,556.51

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Solution

The fourth proportional to 7,912.61, 10,919.78 and 4,556.51 is: 6,288.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.61 : 10,919.78 = 4,556.51 : x
  2. Step 2: Convert to fraction form
    7,912.61/10,919.78 = 4,556.51/x
  3. Step 3: Cross multiply
    7,912.61x = 10,919.78 × 4,556.51
  4. Step 4: Simplify right side
    7,912.61x = 49,756,009.39
  5. Step 5: Solve for x
    x = 49,756,009.39/7,912.61
  6. Step 6: Final answer
    x = 6,288.20

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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.