Home / 8,288.52-12,420.62-4,779.60

Finding the Fourth Proportional to 8,288.52, 12,420.62 and 4,779.60

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Solution

The fourth proportional to 8,288.52, 12,420.62 and 4,779.60 is: 7,162.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,288.52 : 12,420.62 = 4,779.60 : x
  2. Step 2: Convert to fraction form
    8,288.52/12,420.62 = 4,779.60/x
  3. Step 3: Cross multiply
    8,288.52x = 12,420.62 × 4,779.60
  4. Step 4: Simplify right side
    8,288.52x = 59,365,595.35
  5. Step 5: Solve for x
    x = 59,365,595.35/8,288.52
  6. Step 6: Final answer
    x = 7,162.39

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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.