Home / 2,137.90-3,203.40-1,210.70

Finding the Fourth Proportional to 2,137.90, 3,203.40 and 1,210.70

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Solution

The fourth proportional to 2,137.90, 3,203.40 and 1,210.70 is: 1,814.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,137.90 : 3,203.40 = 1,210.70 : x
  2. Step 2: Convert to fraction form
    2,137.90/3,203.40 = 1,210.70/x
  3. Step 3: Cross multiply
    2,137.90x = 3,203.40 × 1,210.70
  4. Step 4: Simplify right side
    2,137.90x = 3,878,356.38
  5. Step 5: Solve for x
    x = 3,878,356.38/2,137.90
  6. Step 6: Final answer
    x = 1,814.10

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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.