Home / 1,765.37-2,436.50-979.67

Finding the Fourth Proportional to 1,765.37, 2,436.50 and 979.67

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Solution

The fourth proportional to 1,765.37, 2,436.50 and 979.67 is: 1,352.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,765.37 : 2,436.50 = 979.67 : x
  2. Step 2: Convert to fraction form
    1,765.37/2,436.50 = 979.67/x
  3. Step 3: Cross multiply
    1,765.37x = 2,436.50 × 979.67
  4. Step 4: Simplify right side
    1,765.37x = 2,386,965.96
  5. Step 5: Solve for x
    x = 2,386,965.96/1,765.37
  6. Step 6: Final answer
    x = 1,352.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.