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Finding the Fourth Proportional to 8,811.99, 12,152.57 and 5,830.79

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Solution

The fourth proportional to 8,811.99, 12,152.57 and 5,830.79 is: 8,041.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.99 : 12,152.57 = 5,830.79 : x
  2. Step 2: Convert to fraction form
    8,811.99/12,152.57 = 5,830.79/x
  3. Step 3: Cross multiply
    8,811.99x = 12,152.57 × 5,830.79
  4. Step 4: Simplify right side
    8,811.99x = 70,858,993.71
  5. Step 5: Solve for x
    x = 70,858,993.71/8,811.99
  6. Step 6: Final answer
    x = 8,041.20

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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.