Home / 7,715.82-10,648.80-4,358.80

Finding the Fourth Proportional to 7,715.82, 10,648.80 and 4,358.80

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Solution

The fourth proportional to 7,715.82, 10,648.80 and 4,358.80 is: 6,015.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.82 : 10,648.80 = 4,358.80 : x
  2. Step 2: Convert to fraction form
    7,715.82/10,648.80 = 4,358.80/x
  3. Step 3: Cross multiply
    7,715.82x = 10,648.80 × 4,358.80
  4. Step 4: Simplify right side
    7,715.82x = 46,415,989.44
  5. Step 5: Solve for x
    x = 46,415,989.44/7,715.82
  6. Step 6: Final answer
    x = 6,015.69

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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.