Home / 6,419.50-8,858.80-3,586.91

Finding the Fourth Proportional to 6,419.50, 8,858.80 and 3,586.91

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Solution

The fourth proportional to 6,419.50, 8,858.80 and 3,586.91 is: 4,949.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,419.50 : 8,858.80 = 3,586.91 : x
  2. Step 2: Convert to fraction form
    6,419.50/8,858.80 = 3,586.91/x
  3. Step 3: Cross multiply
    6,419.50x = 8,858.80 × 3,586.91
  4. Step 4: Simplify right side
    6,419.50x = 31,775,718.31
  5. Step 5: Solve for x
    x = 31,775,718.31/6,419.50
  6. Step 6: Final answer
    x = 4,949.87

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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.