Home / 5,679.81-8,513.38-4,288.63

Finding the Fourth Proportional to 5,679.81, 8,513.38 and 4,288.63

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Solution

The fourth proportional to 5,679.81, 8,513.38 and 4,288.63 is: 6,428.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.81 : 8,513.38 = 4,288.63 : x
  2. Step 2: Convert to fraction form
    5,679.81/8,513.38 = 4,288.63/x
  3. Step 3: Cross multiply
    5,679.81x = 8,513.38 × 4,288.63
  4. Step 4: Simplify right side
    5,679.81x = 36,510,736.87
  5. Step 5: Solve for x
    x = 36,510,736.87/5,679.81
  6. Step 6: Final answer
    x = 6,428.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.