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Finding the Fourth Proportional to 6,900.80, 10,352.76 and 3,005.60

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Solution

The fourth proportional to 6,900.80, 10,352.76 and 3,005.60 is: 4,509.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,900.80 : 10,352.76 = 3,005.60 : x
  2. Step 2: Convert to fraction form
    6,900.80/10,352.76 = 3,005.60/x
  3. Step 3: Cross multiply
    6,900.80x = 10,352.76 × 3,005.60
  4. Step 4: Simplify right side
    6,900.80x = 31,116,255.46
  5. Step 5: Solve for x
    x = 31,116,255.46/6,900.80
  6. Step 6: Final answer
    x = 4,509.08

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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.