Home / 1,668.18-2,302.38-969.60

Finding the Fourth Proportional to 1,668.18, 2,302.38 and 969.60

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Solution

The fourth proportional to 1,668.18, 2,302.38 and 969.60 is: 1,338.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,668.18 : 2,302.38 = 969.60 : x
  2. Step 2: Convert to fraction form
    1,668.18/2,302.38 = 969.60/x
  3. Step 3: Cross multiply
    1,668.18x = 2,302.38 × 969.60
  4. Step 4: Simplify right side
    1,668.18x = 2,232,387.65
  5. Step 5: Solve for x
    x = 2,232,387.65/1,668.18
  6. Step 6: Final answer
    x = 1,338.22

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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.