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Finding the Fourth Proportional to 5,347.95, 7,379.96 and 3,109.89

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Solution

The fourth proportional to 5,347.95, 7,379.96 and 3,109.89 is: 4,291.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,347.95 : 7,379.96 = 3,109.89 : x
  2. Step 2: Convert to fraction form
    5,347.95/7,379.96 = 3,109.89/x
  3. Step 3: Cross multiply
    5,347.95x = 7,379.96 × 3,109.89
  4. Step 4: Simplify right side
    5,347.95x = 22,950,848.25
  5. Step 5: Solve for x
    x = 22,950,848.25/5,347.95
  6. Step 6: Final answer
    x = 4,291.52

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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.