Home / 1,317.02-1,969.71-1,171.79

Finding the Fourth Proportional to 1,317.02, 1,969.71 and 1,171.79

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Solution

The fourth proportional to 1,317.02, 1,969.71 and 1,171.79 is: 1,752.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.02 : 1,969.71 = 1,171.79 : x
  2. Step 2: Convert to fraction form
    1,317.02/1,969.71 = 1,171.79/x
  3. Step 3: Cross multiply
    1,317.02x = 1,969.71 × 1,171.79
  4. Step 4: Simplify right side
    1,317.02x = 2,308,091.41
  5. Step 5: Solve for x
    x = 2,308,091.41/1,317.02
  6. Step 6: Final answer
    x = 1,752.52

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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.