Home / 2,821.45-3,893.55-1,562.47

Finding the Fourth Proportional to 2,821.45, 3,893.55 and 1,562.47

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Solution

The fourth proportional to 2,821.45, 3,893.55 and 1,562.47 is: 2,156.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.45 : 3,893.55 = 1,562.47 : x
  2. Step 2: Convert to fraction form
    2,821.45/3,893.55 = 1,562.47/x
  3. Step 3: Cross multiply
    2,821.45x = 3,893.55 × 1,562.47
  4. Step 4: Simplify right side
    2,821.45x = 6,083,555.07
  5. Step 5: Solve for x
    x = 6,083,555.07/2,821.45
  6. Step 6: Final answer
    x = 2,156.18

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1.5x scale

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.