Home / 2,389.19-3,580.31-1,697.21

Finding the Fourth Proportional to 2,389.19, 3,580.31 and 1,697.21

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Solution

The fourth proportional to 2,389.19, 3,580.31 and 1,697.21 is: 2,543.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.19 : 3,580.31 = 1,697.21 : x
  2. Step 2: Convert to fraction form
    2,389.19/3,580.31 = 1,697.21/x
  3. Step 3: Cross multiply
    2,389.19x = 3,580.31 × 1,697.21
  4. Step 4: Simplify right side
    2,389.19x = 6,076,511.55
  5. Step 5: Solve for x
    x = 6,076,511.55/2,389.19
  6. Step 6: Final answer
    x = 2,543.34

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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.