Home / 1,403.04-2,099.70-855.48

Finding the Fourth Proportional to 1,403.04, 2,099.70 and 855.48

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Solution

The fourth proportional to 1,403.04, 2,099.70 and 855.48 is: 1,280.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403.04 : 2,099.70 = 855.48 : x
  2. Step 2: Convert to fraction form
    1,403.04/2,099.70 = 855.48/x
  3. Step 3: Cross multiply
    1,403.04x = 2,099.70 × 855.48
  4. Step 4: Simplify right side
    1,403.04x = 1,796,251.36
  5. Step 5: Solve for x
    x = 1,796,251.36/1,403.04
  6. Step 6: Final answer
    x = 1,280.26

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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.