Home / 5,309.32-7,317.58-3,889.98

Finding the Fourth Proportional to 5,309.32, 7,317.58 and 3,889.98

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Solution

The fourth proportional to 5,309.32, 7,317.58 and 3,889.98 is: 5,361.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,309.32 : 7,317.58 = 3,889.98 : x
  2. Step 2: Convert to fraction form
    5,309.32/7,317.58 = 3,889.98/x
  3. Step 3: Cross multiply
    5,309.32x = 7,317.58 × 3,889.98
  4. Step 4: Simplify right side
    5,309.32x = 28,465,239.85
  5. Step 5: Solve for x
    x = 28,465,239.85/5,309.32
  6. Step 6: Final answer
    x = 5,361.37

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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.