Home / 1,549.73-2,137.19-1,390.67

Finding the Fourth Proportional to 1,549.73, 2,137.19 and 1,390.67

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Solution

The fourth proportional to 1,549.73, 2,137.19 and 1,390.67 is: 1,917.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,549.73 : 2,137.19 = 1,390.67 : x
  2. Step 2: Convert to fraction form
    1,549.73/2,137.19 = 1,390.67/x
  3. Step 3: Cross multiply
    1,549.73x = 2,137.19 × 1,390.67
  4. Step 4: Simplify right side
    1,549.73x = 2,972,116.39
  5. Step 5: Solve for x
    x = 2,972,116.39/1,549.73
  6. Step 6: Final answer
    x = 1,917.83

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1.5x scale

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.