Home / 2,568.90-3,853.32-621.12

Finding the Fourth Proportional to 2,568.90, 3,853.32 and 621.12

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Solution

The fourth proportional to 2,568.90, 3,853.32 and 621.12 is: 931.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,568.90 : 3,853.32 = 621.12 : x
  2. Step 2: Convert to fraction form
    2,568.90/3,853.32 = 621.12/x
  3. Step 3: Cross multiply
    2,568.90x = 3,853.32 × 621.12
  4. Step 4: Simplify right side
    2,568.90x = 2,393,374.12
  5. Step 5: Solve for x
    x = 2,393,374.12/2,568.90
  6. Step 6: Final answer
    x = 931.67

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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.