Home / 6,487.20-9,722.70-5,790.60

Finding the Fourth Proportional to 6,487.20, 9,722.70 and 5,790.60

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Solution

The fourth proportional to 6,487.20, 9,722.70 and 5,790.60 is: 8,678.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,487.20 : 9,722.70 = 5,790.60 : x
  2. Step 2: Convert to fraction form
    6,487.20/9,722.70 = 5,790.60/x
  3. Step 3: Cross multiply
    6,487.20x = 9,722.70 × 5,790.60
  4. Step 4: Simplify right side
    6,487.20x = 56,300,266.62
  5. Step 5: Solve for x
    x = 56,300,266.62/6,487.20
  6. Step 6: Final answer
    x = 8,678.67

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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.