Home / 5,120.32-7,683.47-2,158.59

Finding the Fourth Proportional to 5,120.32, 7,683.47 and 2,158.59

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Solution

The fourth proportional to 5,120.32, 7,683.47 and 2,158.59 is: 3,239.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.32 : 7,683.47 = 2,158.59 : x
  2. Step 2: Convert to fraction form
    5,120.32/7,683.47 = 2,158.59/x
  3. Step 3: Cross multiply
    5,120.32x = 7,683.47 × 2,158.59
  4. Step 4: Simplify right side
    5,120.32x = 16,585,412.30
  5. Step 5: Solve for x
    x = 16,585,412.30/5,120.32
  6. Step 6: Final answer
    x = 3,239.14

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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.