Home / 2,720.79-4,054.96-2,666.12

Finding the Fourth Proportional to 2,720.79, 4,054.96 and 2,666.12

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Solution

The fourth proportional to 2,720.79, 4,054.96 and 2,666.12 is: 3,973.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.79 : 4,054.96 = 2,666.12 : x
  2. Step 2: Convert to fraction form
    2,720.79/4,054.96 = 2,666.12/x
  3. Step 3: Cross multiply
    2,720.79x = 4,054.96 × 2,666.12
  4. Step 4: Simplify right side
    2,720.79x = 10,810,993.01
  5. Step 5: Solve for x
    x = 10,810,993.01/2,720.79
  6. Step 6: Final answer
    x = 3,973.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.