Home / 1,516.70-2,090.94-1,118.72

Finding the Fourth Proportional to 1,516.70, 2,090.94 and 1,118.72

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Solution

The fourth proportional to 1,516.70, 2,090.94 and 1,118.72 is: 1,542.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.70 : 2,090.94 = 1,118.72 : x
  2. Step 2: Convert to fraction form
    1,516.70/2,090.94 = 1,118.72/x
  3. Step 3: Cross multiply
    1,516.70x = 2,090.94 × 1,118.72
  4. Step 4: Simplify right side
    1,516.70x = 2,339,176.40
  5. Step 5: Solve for x
    x = 2,339,176.40/1,516.70
  6. Step 6: Final answer
    x = 1,542.28

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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.