Home / 6,621.77-9,140.65-3,968.67

Finding the Fourth Proportional to 6,621.77, 9,140.65 and 3,968.67

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Solution

The fourth proportional to 6,621.77, 9,140.65 and 3,968.67 is: 5,478.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.77 : 9,140.65 = 3,968.67 : x
  2. Step 2: Convert to fraction form
    6,621.77/9,140.65 = 3,968.67/x
  3. Step 3: Cross multiply
    6,621.77x = 9,140.65 × 3,968.67
  4. Step 4: Simplify right side
    6,621.77x = 36,276,223.44
  5. Step 5: Solve for x
    x = 36,276,223.44/6,621.77
  6. Step 6: Final answer
    x = 5,478.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.