Home / 2,903.20-4,006.80-1,972

Finding the Fourth Proportional to 2,903.20, 4,006.80 and 1,972

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Solution

The fourth proportional to 2,903.20, 4,006.80 and 1,972 is: 2,721.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,903.20 : 4,006.80 = 1,972 : x
  2. Step 2: Convert to fraction form
    2,903.20/4,006.80 = 1,972/x
  3. Step 3: Cross multiply
    2,903.20x = 4,006.80 × 1,972
  4. Step 4: Simplify right side
    2,903.20x = 7,901,409.60
  5. Step 5: Solve for x
    x = 7,901,409.60/2,903.20
  6. Step 6: Final answer
    x = 2,721.62

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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.