Home / 2,137.32-2,949.54-1,309.80

Finding the Fourth Proportional to 2,137.32, 2,949.54 and 1,309.80

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Solution

The fourth proportional to 2,137.32, 2,949.54 and 1,309.80 is: 1,807.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,137.32 : 2,949.54 = 1,309.80 : x
  2. Step 2: Convert to fraction form
    2,137.32/2,949.54 = 1,309.80/x
  3. Step 3: Cross multiply
    2,137.32x = 2,949.54 × 1,309.80
  4. Step 4: Simplify right side
    2,137.32x = 3,863,307.49
  5. Step 5: Solve for x
    x = 3,863,307.49/2,137.32
  6. Step 6: Final answer
    x = 1,807.55

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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.