Home / 1,990.08-2,747.64-1,779.58

Finding the Fourth Proportional to 1,990.08, 2,747.64 and 1,779.58

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Solution

The fourth proportional to 1,990.08, 2,747.64 and 1,779.58 is: 2,457.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.08 : 2,747.64 = 1,779.58 : x
  2. Step 2: Convert to fraction form
    1,990.08/2,747.64 = 1,779.58/x
  3. Step 3: Cross multiply
    1,990.08x = 2,747.64 × 1,779.58
  4. Step 4: Simplify right side
    1,990.08x = 4,889,645.19
  5. Step 5: Solve for x
    x = 4,889,645.19/1,990.08
  6. Step 6: Final answer
    x = 2,457.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.