Home / 2,910.36-4,365.80-830.40

Finding the Fourth Proportional to 2,910.36, 4,365.80 and 830.40

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Solution

The fourth proportional to 2,910.36, 4,365.80 and 830.40 is: 1,245.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,910.36 : 4,365.80 = 830.40 : x
  2. Step 2: Convert to fraction form
    2,910.36/4,365.80 = 830.40/x
  3. Step 3: Cross multiply
    2,910.36x = 4,365.80 × 830.40
  4. Step 4: Simplify right side
    2,910.36x = 3,625,360.32
  5. Step 5: Solve for x
    x = 3,625,360.32/2,910.36
  6. Step 6: Final answer
    x = 1,245.67

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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.