Home / 1,418.94-1,957.50-921.60

Finding the Fourth Proportional to 1,418.94, 1,957.50 and 921.60

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Solution

The fourth proportional to 1,418.94, 1,957.50 and 921.60 is: 1,271.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.94 : 1,957.50 = 921.60 : x
  2. Step 2: Convert to fraction form
    1,418.94/1,957.50 = 921.60/x
  3. Step 3: Cross multiply
    1,418.94x = 1,957.50 × 921.60
  4. Step 4: Simplify right side
    1,418.94x = 1,804,032
  5. Step 5: Solve for x
    x = 1,804,032/1,418.94
  6. Step 6: Final answer
    x = 1,271.39

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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.