Home / 7,865.80-10,858.13-5,217.10

Finding the Fourth Proportional to 7,865.80, 10,858.13 and 5,217.10

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Solution

The fourth proportional to 7,865.80, 10,858.13 and 5,217.10 is: 7,201.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,865.80 : 10,858.13 = 5,217.10 : x
  2. Step 2: Convert to fraction form
    7,865.80/10,858.13 = 5,217.10/x
  3. Step 3: Cross multiply
    7,865.80x = 10,858.13 × 5,217.10
  4. Step 4: Simplify right side
    7,865.80x = 56,647,950.02
  5. Step 5: Solve for x
    x = 56,647,950.02/7,865.80
  6. Step 6: Final answer
    x = 7,201.80

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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.