Home / 1,779.47-2,665.71-1,678.32

Finding the Fourth Proportional to 1,779.47, 2,665.71 and 1,678.32

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Solution

The fourth proportional to 1,779.47, 2,665.71 and 1,678.32 is: 2,514.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.47 : 2,665.71 = 1,678.32 : x
  2. Step 2: Convert to fraction form
    1,779.47/2,665.71 = 1,678.32/x
  3. Step 3: Cross multiply
    1,779.47x = 2,665.71 × 1,678.32
  4. Step 4: Simplify right side
    1,779.47x = 4,473,914.41
  5. Step 5: Solve for x
    x = 4,473,914.41/1,779.47
  6. Step 6: Final answer
    x = 2,514.19

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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.