Home / 8,789.99-12,130.21-4,811.36

Finding the Fourth Proportional to 8,789.99, 12,130.21 and 4,811.36

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Solution

The fourth proportional to 8,789.99, 12,130.21 and 4,811.36 is: 6,639.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,789.99 : 12,130.21 = 4,811.36 : x
  2. Step 2: Convert to fraction form
    8,789.99/12,130.21 = 4,811.36/x
  3. Step 3: Cross multiply
    8,789.99x = 12,130.21 × 4,811.36
  4. Step 4: Simplify right side
    8,789.99x = 58,362,759.60
  5. Step 5: Solve for x
    x = 58,362,759.60/8,789.99
  6. Step 6: Final answer
    x = 6,639.68

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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.