Home / 1,298.21-1,937.90-1,201.85

Finding the Fourth Proportional to 1,298.21, 1,937.90 and 1,201.85

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Solution

The fourth proportional to 1,298.21, 1,937.90 and 1,201.85 is: 1,794.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298.21 : 1,937.90 = 1,201.85 : x
  2. Step 2: Convert to fraction form
    1,298.21/1,937.90 = 1,201.85/x
  3. Step 3: Cross multiply
    1,298.21x = 1,937.90 × 1,201.85
  4. Step 4: Simplify right side
    1,298.21x = 2,329,068.46
  5. Step 5: Solve for x
    x = 2,329,068.46/1,298.21
  6. Step 6: Final answer
    x = 1,794.06

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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.