Home / 8,128.71-11,219.54-4,771.67

Finding the Fourth Proportional to 8,128.71, 11,219.54 and 4,771.67

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Solution

The fourth proportional to 8,128.71, 11,219.54 and 4,771.67 is: 6,586.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.71 : 11,219.54 = 4,771.67 : x
  2. Step 2: Convert to fraction form
    8,128.71/11,219.54 = 4,771.67/x
  3. Step 3: Cross multiply
    8,128.71x = 11,219.54 × 4,771.67
  4. Step 4: Simplify right side
    8,128.71x = 53,535,862.48
  5. Step 5: Solve for x
    x = 53,535,862.48/8,128.71
  6. Step 6: Final answer
    x = 6,586.02

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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.