Home / 8,405.36-12,606.84-2,858.88

Finding the Fourth Proportional to 8,405.36, 12,606.84 and 2,858.88

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Solution

The fourth proportional to 8,405.36, 12,606.84 and 2,858.88 is: 4,287.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,405.36 : 12,606.84 = 2,858.88 : x
  2. Step 2: Convert to fraction form
    8,405.36/12,606.84 = 2,858.88/x
  3. Step 3: Cross multiply
    8,405.36x = 12,606.84 × 2,858.88
  4. Step 4: Simplify right side
    8,405.36x = 36,041,442.74
  5. Step 5: Solve for x
    x = 36,041,442.74/8,405.36
  6. Step 6: Final answer
    x = 4,287.91

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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.