Home / 8,585.21-12,861.47-4,889.99

Finding the Fourth Proportional to 8,585.21, 12,861.47 and 4,889.99

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Solution

The fourth proportional to 8,585.21, 12,861.47 and 4,889.99 is: 7,325.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,585.21 : 12,861.47 = 4,889.99 : x
  2. Step 2: Convert to fraction form
    8,585.21/12,861.47 = 4,889.99/x
  3. Step 3: Cross multiply
    8,585.21x = 12,861.47 × 4,889.99
  4. Step 4: Simplify right side
    8,585.21x = 62,892,370.93
  5. Step 5: Solve for x
    x = 62,892,370.93/8,585.21
  6. Step 6: Final answer
    x = 7,325.67

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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.