Home / 4,454.70-6,683.60-1,989.28

Finding the Fourth Proportional to 4,454.70, 6,683.60 and 1,989.28

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Solution

The fourth proportional to 4,454.70, 6,683.60 and 1,989.28 is: 2,984.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,454.70 : 6,683.60 = 1,989.28 : x
  2. Step 2: Convert to fraction form
    4,454.70/6,683.60 = 1,989.28/x
  3. Step 3: Cross multiply
    4,454.70x = 6,683.60 × 1,989.28
  4. Step 4: Simplify right side
    4,454.70x = 13,295,551.81
  5. Step 5: Solve for x
    x = 13,295,551.81/4,454.70
  6. Step 6: Final answer
    x = 2,984.61

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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.