Home / 1,980.99-2,729.01-1,666.26

Finding the Fourth Proportional to 1,980.99, 2,729.01 and 1,666.26

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Solution

The fourth proportional to 1,980.99, 2,729.01 and 1,666.26 is: 2,295.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.99 : 2,729.01 = 1,666.26 : x
  2. Step 2: Convert to fraction form
    1,980.99/2,729.01 = 1,666.26/x
  3. Step 3: Cross multiply
    1,980.99x = 2,729.01 × 1,666.26
  4. Step 4: Simplify right side
    1,980.99x = 4,547,240.20
  5. Step 5: Solve for x
    x = 4,547,240.20/1,980.99
  6. Step 6: Final answer
    x = 2,295.44

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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.