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Finding the Fourth Proportional to 8,047.60, 12,085.80 and 5,858.80

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Solution

The fourth proportional to 8,047.60, 12,085.80 and 5,858.80 is: 8,798.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,047.60 : 12,085.80 = 5,858.80 : x
  2. Step 2: Convert to fraction form
    8,047.60/12,085.80 = 5,858.80/x
  3. Step 3: Cross multiply
    8,047.60x = 12,085.80 × 5,858.80
  4. Step 4: Simplify right side
    8,047.60x = 70,808,285.04
  5. Step 5: Solve for x
    x = 70,808,285.04/8,047.60
  6. Step 6: Final answer
    x = 8,798.68

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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.