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Finding the Fourth Proportional to 5,807.85, 8,014.85 and 3,155.30

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Solution

The fourth proportional to 5,807.85, 8,014.85 and 3,155.30 is: 4,354.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,807.85 : 8,014.85 = 3,155.30 : x
  2. Step 2: Convert to fraction form
    5,807.85/8,014.85 = 3,155.30/x
  3. Step 3: Cross multiply
    5,807.85x = 8,014.85 × 3,155.30
  4. Step 4: Simplify right side
    5,807.85x = 25,289,287.33
  5. Step 5: Solve for x
    x = 25,289,287.33/5,807.85
  6. Step 6: Final answer
    x = 4,354.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.