Home / 2,866.77-3,953.75-1,871.28

Finding the Fourth Proportional to 2,866.77, 3,953.75 and 1,871.28

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Solution

The fourth proportional to 2,866.77, 3,953.75 and 1,871.28 is: 2,580.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,866.77 : 3,953.75 = 1,871.28 : x
  2. Step 2: Convert to fraction form
    2,866.77/3,953.75 = 1,871.28/x
  3. Step 3: Cross multiply
    2,866.77x = 3,953.75 × 1,871.28
  4. Step 4: Simplify right side
    2,866.77x = 7,398,563.94
  5. Step 5: Solve for x
    x = 7,398,563.94/2,866.77
  6. Step 6: Final answer
    x = 2,580.80

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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.