Home / 1,927.78-2,656.65-1,374.82

Finding the Fourth Proportional to 1,927.78, 2,656.65 and 1,374.82

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Solution

The fourth proportional to 1,927.78, 2,656.65 and 1,374.82 is: 1,894.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927.78 : 2,656.65 = 1,374.82 : x
  2. Step 2: Convert to fraction form
    1,927.78/2,656.65 = 1,374.82/x
  3. Step 3: Cross multiply
    1,927.78x = 2,656.65 × 1,374.82
  4. Step 4: Simplify right side
    1,927.78x = 3,652,415.55
  5. Step 5: Solve for x
    x = 3,652,415.55/1,927.78
  6. Step 6: Final answer
    x = 1,894.62

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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.