Home / 1,515.01-2,090.75-851.94

Finding the Fourth Proportional to 1,515.01, 2,090.75 and 851.94

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Solution

The fourth proportional to 1,515.01, 2,090.75 and 851.94 is: 1,175.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.01 : 2,090.75 = 851.94 : x
  2. Step 2: Convert to fraction form
    1,515.01/2,090.75 = 851.94/x
  3. Step 3: Cross multiply
    1,515.01x = 2,090.75 × 851.94
  4. Step 4: Simplify right side
    1,515.01x = 1,781,193.56
  5. Step 5: Solve for x
    x = 1,781,193.56/1,515.01
  6. Step 6: Final answer
    x = 1,175.70

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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.