Home / 1,628.44-2,245.75-1,089.13

Finding the Fourth Proportional to 1,628.44, 2,245.75 and 1,089.13

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Solution

The fourth proportional to 1,628.44, 2,245.75 and 1,089.13 is: 1,502.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.44 : 2,245.75 = 1,089.13 : x
  2. Step 2: Convert to fraction form
    1,628.44/2,245.75 = 1,089.13/x
  3. Step 3: Cross multiply
    1,628.44x = 2,245.75 × 1,089.13
  4. Step 4: Simplify right side
    1,628.44x = 2,445,913.70
  5. Step 5: Solve for x
    x = 2,445,913.70/1,628.44
  6. Step 6: Final answer
    x = 1,502.00

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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.