Home / 7,431.70-10,239.32-6,109.78

Finding the Fourth Proportional to 7,431.70, 10,239.32 and 6,109.78

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Solution

The fourth proportional to 7,431.70, 10,239.32 and 6,109.78 is: 8,417.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,431.70 : 10,239.32 = 6,109.78 : x
  2. Step 2: Convert to fraction form
    7,431.70/10,239.32 = 6,109.78/x
  3. Step 3: Cross multiply
    7,431.70x = 10,239.32 × 6,109.78
  4. Step 4: Simplify right side
    7,431.70x = 62,559,992.55
  5. Step 5: Solve for x
    x = 62,559,992.55/7,431.70
  6. Step 6: Final answer
    x = 8,417.99

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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.