Home / 1,815.09-2,516.52-1,779.45

Finding the Fourth Proportional to 1,815.09, 2,516.52 and 1,779.45

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Solution

The fourth proportional to 1,815.09, 2,516.52 and 1,779.45 is: 2,467.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.09 : 2,516.52 = 1,779.45 : x
  2. Step 2: Convert to fraction form
    1,815.09/2,516.52 = 1,779.45/x
  3. Step 3: Cross multiply
    1,815.09x = 2,516.52 × 1,779.45
  4. Step 4: Simplify right side
    1,815.09x = 4,478,021.51
  5. Step 5: Solve for x
    x = 4,478,021.51/1,815.09
  6. Step 6: Final answer
    x = 2,467.11

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.