Home / 5,889.79-8,130.07-3,900.99

Finding the Fourth Proportional to 5,889.79, 8,130.07 and 3,900.99

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Solution

The fourth proportional to 5,889.79, 8,130.07 and 3,900.99 is: 5,384.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,889.79 : 8,130.07 = 3,900.99 : x
  2. Step 2: Convert to fraction form
    5,889.79/8,130.07 = 3,900.99/x
  3. Step 3: Cross multiply
    5,889.79x = 8,130.07 × 3,900.99
  4. Step 4: Simplify right side
    5,889.79x = 31,715,288.54
  5. Step 5: Solve for x
    x = 31,715,288.54/5,889.79
  6. Step 6: Final answer
    x = 5,384.79

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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.