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Finding the Fourth Proportional to 8,340.87, 11,509.65 and 4,803.60

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Solution

The fourth proportional to 8,340.87, 11,509.65 and 4,803.60 is: 6,628.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,340.87 : 11,509.65 = 4,803.60 : x
  2. Step 2: Convert to fraction form
    8,340.87/11,509.65 = 4,803.60/x
  3. Step 3: Cross multiply
    8,340.87x = 11,509.65 × 4,803.60
  4. Step 4: Simplify right side
    8,340.87x = 55,287,754.74
  5. Step 5: Solve for x
    x = 55,287,754.74/8,340.87
  6. Step 6: Final answer
    x = 6,628.54

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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.