Home / 1,554.57-2,143.14-1,111.68

Finding the Fourth Proportional to 1,554.57, 2,143.14 and 1,111.68

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Solution

The fourth proportional to 1,554.57, 2,143.14 and 1,111.68 is: 1,532.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,554.57 : 2,143.14 = 1,111.68 : x
  2. Step 2: Convert to fraction form
    1,554.57/2,143.14 = 1,111.68/x
  3. Step 3: Cross multiply
    1,554.57x = 2,143.14 × 1,111.68
  4. Step 4: Simplify right side
    1,554.57x = 2,382,485.88
  5. Step 5: Solve for x
    x = 2,382,485.88/1,554.57
  6. Step 6: Final answer
    x = 1,532.57

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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.