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Finding the Fourth Proportional to 6,807.85, 10,190.71 and 5,811.55

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Solution

The fourth proportional to 6,807.85, 10,190.71 and 5,811.55 is: 8,699.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,807.85 : 10,190.71 = 5,811.55 : x
  2. Step 2: Convert to fraction form
    6,807.85/10,190.71 = 5,811.55/x
  3. Step 3: Cross multiply
    6,807.85x = 10,190.71 × 5,811.55
  4. Step 4: Simplify right side
    6,807.85x = 59,223,802.49
  5. Step 5: Solve for x
    x = 59,223,802.49/6,807.85
  6. Step 6: Final answer
    x = 8,699.34

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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.