Home / 1,768.95-2,440.73-1,139.67

Finding the Fourth Proportional to 1,768.95, 2,440.73 and 1,139.67

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Solution

The fourth proportional to 1,768.95, 2,440.73 and 1,139.67 is: 1,572.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,768.95 : 2,440.73 = 1,139.67 : x
  2. Step 2: Convert to fraction form
    1,768.95/2,440.73 = 1,139.67/x
  3. Step 3: Cross multiply
    1,768.95x = 2,440.73 × 1,139.67
  4. Step 4: Simplify right side
    1,768.95x = 2,781,629.61
  5. Step 5: Solve for x
    x = 2,781,629.61/1,768.95
  6. Step 6: Final answer
    x = 1,572.47

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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.