Home / 2,871.08-3,960.09-1,877.51

Finding the Fourth Proportional to 2,871.08, 3,960.09 and 1,877.51

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Solution

The fourth proportional to 2,871.08, 3,960.09 and 1,877.51 is: 2,589.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.08 : 3,960.09 = 1,877.51 : x
  2. Step 2: Convert to fraction form
    2,871.08/3,960.09 = 1,877.51/x
  3. Step 3: Cross multiply
    2,871.08x = 3,960.09 × 1,877.51
  4. Step 4: Simplify right side
    2,871.08x = 7,435,118.48
  5. Step 5: Solve for x
    x = 7,435,118.48/2,871.08
  6. Step 6: Final answer
    x = 2,589.66

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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.