Home / 1,298.34-1,938.09-1,201.98

Finding the Fourth Proportional to 1,298.34, 1,938.09 and 1,201.98

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Solution

The fourth proportional to 1,298.34, 1,938.09 and 1,201.98 is: 1,794.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298.34 : 1,938.09 = 1,201.98 : x
  2. Step 2: Convert to fraction form
    1,298.34/1,938.09 = 1,201.98/x
  3. Step 3: Cross multiply
    1,298.34x = 1,938.09 × 1,201.98
  4. Step 4: Simplify right side
    1,298.34x = 2,329,539.41
  5. Step 5: Solve for x
    x = 2,329,539.41/1,298.34
  6. Step 6: Final answer
    x = 1,794.25

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.