Home / 7,985.52-11,970.72-2,788.02

Finding the Fourth Proportional to 7,985.52, 11,970.72 and 2,788.02

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Solution

The fourth proportional to 7,985.52, 11,970.72 and 2,788.02 is: 4,179.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.52 : 11,970.72 = 2,788.02 : x
  2. Step 2: Convert to fraction form
    7,985.52/11,970.72 = 2,788.02/x
  3. Step 3: Cross multiply
    7,985.52x = 11,970.72 × 2,788.02
  4. Step 4: Simplify right side
    7,985.52x = 33,374,606.77
  5. Step 5: Solve for x
    x = 33,374,606.77/7,985.52
  6. Step 6: Final answer
    x = 4,179.39

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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.