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Finding the Fourth Proportional to 8,782.57, 12,119.96 and 4,803.67

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Solution

The fourth proportional to 8,782.57, 12,119.96 and 4,803.67 is: 6,629.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,782.57 : 12,119.96 = 4,803.67 : x
  2. Step 2: Convert to fraction form
    8,782.57/12,119.96 = 4,803.67/x
  3. Step 3: Cross multiply
    8,782.57x = 12,119.96 × 4,803.67
  4. Step 4: Simplify right side
    8,782.57x = 58,220,288.25
  5. Step 5: Solve for x
    x = 58,220,288.25/8,782.57
  6. Step 6: Final answer
    x = 6,629.07

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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.