Home / 1,116.14-1,684.21-1,071.19

Finding the Fourth Proportional to 1,116.14, 1,684.21 and 1,071.19

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Solution

The fourth proportional to 1,116.14, 1,684.21 and 1,071.19 is: 1,616.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116.14 : 1,684.21 = 1,071.19 : x
  2. Step 2: Convert to fraction form
    1,116.14/1,684.21 = 1,071.19/x
  3. Step 3: Cross multiply
    1,116.14x = 1,684.21 × 1,071.19
  4. Step 4: Simplify right side
    1,116.14x = 1,804,095.13
  5. Step 5: Solve for x
    x = 1,804,095.13/1,116.14
  6. Step 6: Final answer
    x = 1,616.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.