Home / 1,927.90-2,657.85-1,219.39

Finding the Fourth Proportional to 1,927.90, 2,657.85 and 1,219.39

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Solution

The fourth proportional to 1,927.90, 2,657.85 and 1,219.39 is: 1,681.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927.90 : 2,657.85 = 1,219.39 : x
  2. Step 2: Convert to fraction form
    1,927.90/2,657.85 = 1,219.39/x
  3. Step 3: Cross multiply
    1,927.90x = 2,657.85 × 1,219.39
  4. Step 4: Simplify right side
    1,927.90x = 3,240,944.49
  5. Step 5: Solve for x
    x = 3,240,944.49/1,927.90
  6. Step 6: Final answer
    x = 1,681.07

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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.