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Finding the Fourth Proportional to 6,999.90, 10,485.45 and 4,811.10

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Solution

The fourth proportional to 6,999.90, 10,485.45 and 4,811.10 is: 7,206.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,999.90 : 10,485.45 = 4,811.10 : x
  2. Step 2: Convert to fraction form
    6,999.90/10,485.45 = 4,811.10/x
  3. Step 3: Cross multiply
    6,999.90x = 10,485.45 × 4,811.10
  4. Step 4: Simplify right side
    6,999.90x = 50,446,548.50
  5. Step 5: Solve for x
    x = 50,446,548.50/6,999.90
  6. Step 6: Final answer
    x = 7,206.75

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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.