Home / 1,317.11-1,817.41-757.60

Finding the Fourth Proportional to 1,317.11, 1,817.41 and 757.60

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Solution

The fourth proportional to 1,317.11, 1,817.41 and 757.60 is: 1,045.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.11 : 1,817.41 = 757.60 : x
  2. Step 2: Convert to fraction form
    1,317.11/1,817.41 = 757.60/x
  3. Step 3: Cross multiply
    1,317.11x = 1,817.41 × 757.60
  4. Step 4: Simplify right side
    1,317.11x = 1,376,866.03
  5. Step 5: Solve for x
    x = 1,376,866.03/1,317.11
  6. Step 6: Final answer
    x = 1,045.37

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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.