Home / 1,317.24-1,971.66-926.76

Finding the Fourth Proportional to 1,317.24, 1,971.66 and 926.76

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Solution

The fourth proportional to 1,317.24, 1,971.66 and 926.76 is: 1,387.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.24 : 1,971.66 = 926.76 : x
  2. Step 2: Convert to fraction form
    1,317.24/1,971.66 = 926.76/x
  3. Step 3: Cross multiply
    1,317.24x = 1,971.66 × 926.76
  4. Step 4: Simplify right side
    1,317.24x = 1,827,255.62
  5. Step 5: Solve for x
    x = 1,827,255.62/1,317.24
  6. Step 6: Final answer
    x = 1,387.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.