Home / 2,021.40-3,030.30-1,802.70

Finding the Fourth Proportional to 2,021.40, 3,030.30 and 1,802.70

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Solution

The fourth proportional to 2,021.40, 3,030.30 and 1,802.70 is: 2,702.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.40 : 3,030.30 = 1,802.70 : x
  2. Step 2: Convert to fraction form
    2,021.40/3,030.30 = 1,802.70/x
  3. Step 3: Cross multiply
    2,021.40x = 3,030.30 × 1,802.70
  4. Step 4: Simplify right side
    2,021.40x = 5,462,721.81
  5. Step 5: Solve for x
    x = 5,462,721.81/2,021.40
  6. Step 6: Final answer
    x = 2,702.44

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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.