Home / 7,856.88-10,843.14-4,320.78

Finding the Fourth Proportional to 7,856.88, 10,843.14 and 4,320.78

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Solution

The fourth proportional to 7,856.88, 10,843.14 and 4,320.78 is: 5,963.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,856.88 : 10,843.14 = 4,320.78 : x
  2. Step 2: Convert to fraction form
    7,856.88/10,843.14 = 4,320.78/x
  3. Step 3: Cross multiply
    7,856.88x = 10,843.14 × 4,320.78
  4. Step 4: Simplify right side
    7,856.88x = 46,850,822.45
  5. Step 5: Solve for x
    x = 46,850,822.45/7,856.88
  6. Step 6: Final answer
    x = 5,963.03

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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.