Home / 2,921.51-4,383.08-1,686.66

Finding the Fourth Proportional to 2,921.51, 4,383.08 and 1,686.66

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Solution

The fourth proportional to 2,921.51, 4,383.08 and 1,686.66 is: 2,530.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.51 : 4,383.08 = 1,686.66 : x
  2. Step 2: Convert to fraction form
    2,921.51/4,383.08 = 1,686.66/x
  3. Step 3: Cross multiply
    2,921.51x = 4,383.08 × 1,686.66
  4. Step 4: Simplify right side
    2,921.51x = 7,392,757.28
  5. Step 5: Solve for x
    x = 7,392,757.28/2,921.51
  6. Step 6: Final answer
    x = 2,530.46

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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.