Home / 1,116.10-1,673.67-491.39

Finding the Fourth Proportional to 1,116.10, 1,673.67 and 491.39

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Solution

The fourth proportional to 1,116.10, 1,673.67 and 491.39 is: 736.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116.10 : 1,673.67 = 491.39 : x
  2. Step 2: Convert to fraction form
    1,116.10/1,673.67 = 491.39/x
  3. Step 3: Cross multiply
    1,116.10x = 1,673.67 × 491.39
  4. Step 4: Simplify right side
    1,116.10x = 822,418.36
  5. Step 5: Solve for x
    x = 822,418.36/1,116.10
  6. Step 6: Final answer
    x = 736.87

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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.