Home / 6,810.30-10,215.45-5,147.10

Finding the Fourth Proportional to 6,810.30, 10,215.45 and 5,147.10

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Solution

The fourth proportional to 6,810.30, 10,215.45 and 5,147.10 is: 7,720.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,810.30 : 10,215.45 = 5,147.10 : x
  2. Step 2: Convert to fraction form
    6,810.30/10,215.45 = 5,147.10/x
  3. Step 3: Cross multiply
    6,810.30x = 10,215.45 × 5,147.10
  4. Step 4: Simplify right side
    6,810.30x = 52,579,942.70
  5. Step 5: Solve for x
    x = 52,579,942.70/6,810.30
  6. Step 6: Final answer
    x = 7,720.65

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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.