Home / 5,140.32-7,705.61-2,220.67

Finding the Fourth Proportional to 5,140.32, 7,705.61 and 2,220.67

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Solution

The fourth proportional to 5,140.32, 7,705.61 and 2,220.67 is: 3,328.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.32 : 7,705.61 = 2,220.67 : x
  2. Step 2: Convert to fraction form
    5,140.32/7,705.61 = 2,220.67/x
  3. Step 3: Cross multiply
    5,140.32x = 7,705.61 × 2,220.67
  4. Step 4: Simplify right side
    5,140.32x = 17,111,616.96
  5. Step 5: Solve for x
    x = 17,111,616.96/5,140.32
  6. Step 6: Final answer
    x = 3,328.90

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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.