Home / 1,628.25-2,428.65-1,365.20

Finding the Fourth Proportional to 1,628.25, 2,428.65 and 1,365.20

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Solution

The fourth proportional to 1,628.25, 2,428.65 and 1,365.20 is: 2,036.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.25 : 2,428.65 = 1,365.20 : x
  2. Step 2: Convert to fraction form
    1,628.25/2,428.65 = 1,365.20/x
  3. Step 3: Cross multiply
    1,628.25x = 2,428.65 × 1,365.20
  4. Step 4: Simplify right side
    1,628.25x = 3,315,592.98
  5. Step 5: Solve for x
    x = 3,315,592.98/1,628.25
  6. Step 6: Final answer
    x = 2,036.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.