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Finding the Fourth Proportional to 6,810.60, 10,215.90 and 4,858.50

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Solution

The fourth proportional to 6,810.60, 10,215.90 and 4,858.50 is: 7,287.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,810.60 : 10,215.90 = 4,858.50 : x
  2. Step 2: Convert to fraction form
    6,810.60/10,215.90 = 4,858.50/x
  3. Step 3: Cross multiply
    6,810.60x = 10,215.90 × 4,858.50
  4. Step 4: Simplify right side
    6,810.60x = 49,633,950.15
  5. Step 5: Solve for x
    x = 49,633,950.15/6,810.60
  6. Step 6: Final answer
    x = 7,287.75

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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.