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Finding the Fourth Proportional to 5,807.90, 8,014.78 and 3,155.38

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Solution

The fourth proportional to 5,807.90, 8,014.78 and 3,155.38 is: 4,354.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,807.90 : 8,014.78 = 3,155.38 : x
  2. Step 2: Convert to fraction form
    5,807.90/8,014.78 = 3,155.38/x
  3. Step 3: Cross multiply
    5,807.90x = 8,014.78 × 3,155.38
  4. Step 4: Simplify right side
    5,807.90x = 25,289,676.52
  5. Step 5: Solve for x
    x = 25,289,676.52/5,807.90
  6. Step 6: Final answer
    x = 4,354.36

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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.