Home / 6,439.20-8,893.20-4,455.84

Finding the Fourth Proportional to 6,439.20, 8,893.20 and 4,455.84

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Solution

The fourth proportional to 6,439.20, 8,893.20 and 4,455.84 is: 6,153.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439.20 : 8,893.20 = 4,455.84 : x
  2. Step 2: Convert to fraction form
    6,439.20/8,893.20 = 4,455.84/x
  3. Step 3: Cross multiply
    6,439.20x = 8,893.20 × 4,455.84
  4. Step 4: Simplify right side
    6,439.20x = 39,626,676.29
  5. Step 5: Solve for x
    x = 39,626,676.29/6,439.20
  6. Step 6: Final answer
    x = 6,153.98

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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.