Home / 8,239.86-11,389.70-7,585.94

Finding the Fourth Proportional to 8,239.86, 11,389.70 and 7,585.94

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Solution

The fourth proportional to 8,239.86, 11,389.70 and 7,585.94 is: 10,485.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,239.86 : 11,389.70 = 7,585.94 : x
  2. Step 2: Convert to fraction form
    8,239.86/11,389.70 = 7,585.94/x
  3. Step 3: Cross multiply
    8,239.86x = 11,389.70 × 7,585.94
  4. Step 4: Simplify right side
    8,239.86x = 86,401,485.94
  5. Step 5: Solve for x
    x = 86,401,485.94/8,239.86
  6. Step 6: Final answer
    x = 10,485.80

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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.