Home / 6,128.81-8,456.44-3,609.99

Finding the Fourth Proportional to 6,128.81, 8,456.44 and 3,609.99

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Solution

The fourth proportional to 6,128.81, 8,456.44 and 3,609.99 is: 4,981.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,128.81 : 8,456.44 = 3,609.99 : x
  2. Step 2: Convert to fraction form
    6,128.81/8,456.44 = 3,609.99/x
  3. Step 3: Cross multiply
    6,128.81x = 8,456.44 × 3,609.99
  4. Step 4: Simplify right side
    6,128.81x = 30,527,663.84
  5. Step 5: Solve for x
    x = 30,527,663.84/6,128.81
  6. Step 6: Final answer
    x = 4,981.01

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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.