Home / 1,776.40-2,664.44-680.08

Finding the Fourth Proportional to 1,776.40, 2,664.44 and 680.08

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Solution

The fourth proportional to 1,776.40, 2,664.44 and 680.08 is: 1,020.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,776.40 : 2,664.44 = 680.08 : x
  2. Step 2: Convert to fraction form
    1,776.40/2,664.44 = 680.08/x
  3. Step 3: Cross multiply
    1,776.40x = 2,664.44 × 680.08
  4. Step 4: Simplify right side
    1,776.40x = 1,812,032.36
  5. Step 5: Solve for x
    x = 1,812,032.36/1,776.40
  6. Step 6: Final answer
    x = 1,020.06

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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.