Home / 8,064.08-12,090.95-3,128.46

Finding the Fourth Proportional to 8,064.08, 12,090.95 and 3,128.46

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Solution

The fourth proportional to 8,064.08, 12,090.95 and 3,128.46 is: 4,690.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,064.08 : 12,090.95 = 3,128.46 : x
  2. Step 2: Convert to fraction form
    8,064.08/12,090.95 = 3,128.46/x
  3. Step 3: Cross multiply
    8,064.08x = 12,090.95 × 3,128.46
  4. Step 4: Simplify right side
    8,064.08x = 37,826,053.44
  5. Step 5: Solve for x
    x = 37,826,053.44/8,064.08
  6. Step 6: Final answer
    x = 4,690.68

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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.