Home / 2,655.09-3,666.69-2,187.63

Finding the Fourth Proportional to 2,655.09, 3,666.69 and 2,187.63

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Solution

The fourth proportional to 2,655.09, 3,666.69 and 2,187.63 is: 3,021.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,655.09 : 3,666.69 = 2,187.63 : x
  2. Step 2: Convert to fraction form
    2,655.09/3,666.69 = 2,187.63/x
  3. Step 3: Cross multiply
    2,655.09x = 3,666.69 × 2,187.63
  4. Step 4: Simplify right side
    2,655.09x = 8,021,361.04
  5. Step 5: Solve for x
    x = 8,021,361.04/2,655.09
  6. Step 6: Final answer
    x = 3,021.13

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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.