Home / 3,875.19-5,347.75-2,106.80

Finding the Fourth Proportional to 3,875.19, 5,347.75 and 2,106.80

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Solution

The fourth proportional to 3,875.19, 5,347.75 and 2,106.80 is: 2,907.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,875.19 : 5,347.75 = 2,106.80 : x
  2. Step 2: Convert to fraction form
    3,875.19/5,347.75 = 2,106.80/x
  3. Step 3: Cross multiply
    3,875.19x = 5,347.75 × 2,106.80
  4. Step 4: Simplify right side
    3,875.19x = 11,266,639.70
  5. Step 5: Solve for x
    x = 11,266,639.70/3,875.19
  6. Step 6: Final answer
    x = 2,907.38

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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.