Home / 6,641.20-9,160.32-4,120.64

Finding the Fourth Proportional to 6,641.20, 9,160.32 and 4,120.64

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Solution

The fourth proportional to 6,641.20, 9,160.32 and 4,120.64 is: 5,683.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,641.20 : 9,160.32 = 4,120.64 : x
  2. Step 2: Convert to fraction form
    6,641.20/9,160.32 = 4,120.64/x
  3. Step 3: Cross multiply
    6,641.20x = 9,160.32 × 4,120.64
  4. Step 4: Simplify right side
    6,641.20x = 37,746,381.00
  5. Step 5: Solve for x
    x = 37,746,381.00/6,641.20
  6. Step 6: Final answer
    x = 5,683.67

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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.