Home / 1,316.33-1,964.99-1,120.02

Finding the Fourth Proportional to 1,316.33, 1,964.99 and 1,120.02

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Solution

The fourth proportional to 1,316.33, 1,964.99 and 1,120.02 is: 1,671.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.33 : 1,964.99 = 1,120.02 : x
  2. Step 2: Convert to fraction form
    1,316.33/1,964.99 = 1,120.02/x
  3. Step 3: Cross multiply
    1,316.33x = 1,964.99 × 1,120.02
  4. Step 4: Simplify right side
    1,316.33x = 2,200,823.53
  5. Step 5: Solve for x
    x = 2,200,823.53/1,316.33
  6. Step 6: Final answer
    x = 1,671.94

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.