Home / 7,719.32-11,577.90-2,788.28

Finding the Fourth Proportional to 7,719.32, 11,577.90 and 2,788.28

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Solution

The fourth proportional to 7,719.32, 11,577.90 and 2,788.28 is: 4,182.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.32 : 11,577.90 = 2,788.28 : x
  2. Step 2: Convert to fraction form
    7,719.32/11,577.90 = 2,788.28/x
  3. Step 3: Cross multiply
    7,719.32x = 11,577.90 × 2,788.28
  4. Step 4: Simplify right side
    7,719.32x = 32,282,427.01
  5. Step 5: Solve for x
    x = 32,282,427.01/7,719.32
  6. Step 6: Final answer
    x = 4,182.03

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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.