Home / 1,010.16-1,390.91-968.67

Finding the Fourth Proportional to 1,010.16, 1,390.91 and 968.67

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Solution

The fourth proportional to 1,010.16, 1,390.91 and 968.67 is: 1,333.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010.16 : 1,390.91 = 968.67 : x
  2. Step 2: Convert to fraction form
    1,010.16/1,390.91 = 968.67/x
  3. Step 3: Cross multiply
    1,010.16x = 1,390.91 × 968.67
  4. Step 4: Simplify right side
    1,010.16x = 1,347,327.95
  5. Step 5: Solve for x
    x = 1,347,327.95/1,010.16
  6. Step 6: Final answer
    x = 1,333.78

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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.