Home / 8,070.76-12,110.80-3,390.40

Finding the Fourth Proportional to 8,070.76, 12,110.80 and 3,390.40

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Solution

The fourth proportional to 8,070.76, 12,110.80 and 3,390.40 is: 5,087.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,070.76 : 12,110.80 = 3,390.40 : x
  2. Step 2: Convert to fraction form
    8,070.76/12,110.80 = 3,390.40/x
  3. Step 3: Cross multiply
    8,070.76x = 12,110.80 × 3,390.40
  4. Step 4: Simplify right side
    8,070.76x = 41,060,456.32
  5. Step 5: Solve for x
    x = 41,060,456.32/8,070.76
  6. Step 6: Final answer
    x = 5,087.56

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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.