Home / 5,639.70-8,457.93-1,941.78

Finding the Fourth Proportional to 5,639.70, 8,457.93 and 1,941.78

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Solution

The fourth proportional to 5,639.70, 8,457.93 and 1,941.78 is: 2,912.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.70 : 8,457.93 = 1,941.78 : x
  2. Step 2: Convert to fraction form
    5,639.70/8,457.93 = 1,941.78/x
  3. Step 3: Cross multiply
    5,639.70x = 8,457.93 × 1,941.78
  4. Step 4: Simplify right side
    5,639.70x = 16,423,439.32
  5. Step 5: Solve for x
    x = 16,423,439.32/5,639.70
  6. Step 6: Final answer
    x = 2,912.11

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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.