Home / 3,875.24-5,347.81-2,106.85

Finding the Fourth Proportional to 3,875.24, 5,347.81 and 2,106.85

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Solution

The fourth proportional to 3,875.24, 5,347.81 and 2,106.85 is: 2,907.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,875.24 : 5,347.81 = 2,106.85 : x
  2. Step 2: Convert to fraction form
    3,875.24/5,347.81 = 2,106.85/x
  3. Step 3: Cross multiply
    3,875.24x = 5,347.81 × 2,106.85
  4. Step 4: Simplify right side
    3,875.24x = 11,267,033.50
  5. Step 5: Solve for x
    x = 11,267,033.50/3,875.24
  6. Step 6: Final answer
    x = 2,907.44

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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.