Home / 2,909.40-4,363.60-828.92

Finding the Fourth Proportional to 2,909.40, 4,363.60 and 828.92

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Solution

The fourth proportional to 2,909.40, 4,363.60 and 828.92 is: 1,243.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.40 : 4,363.60 = 828.92 : x
  2. Step 2: Convert to fraction form
    2,909.40/4,363.60 = 828.92/x
  3. Step 3: Cross multiply
    2,909.40x = 4,363.60 × 828.92
  4. Step 4: Simplify right side
    2,909.40x = 3,617,075.31
  5. Step 5: Solve for x
    x = 3,617,075.31/2,909.40
  6. Step 6: Final answer
    x = 1,243.24

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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.