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Finding the Fourth Proportional to 8,978.95, 13,470.59 and 2,822.95

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Solution

The fourth proportional to 8,978.95, 13,470.59 and 2,822.95 is: 4,235.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,978.95 : 13,470.59 = 2,822.95 : x
  2. Step 2: Convert to fraction form
    8,978.95/13,470.59 = 2,822.95/x
  3. Step 3: Cross multiply
    8,978.95x = 13,470.59 × 2,822.95
  4. Step 4: Simplify right side
    8,978.95x = 38,026,802.04
  5. Step 5: Solve for x
    x = 38,026,802.04/8,978.95
  6. Step 6: Final answer
    x = 4,235.11

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.