Home / 3,875.25-5,347.90-2,106.86

Finding the Fourth Proportional to 3,875.25, 5,347.90 and 2,106.86

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Solution

The fourth proportional to 3,875.25, 5,347.90 and 2,106.86 is: 2,907.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,875.25 : 5,347.90 = 2,106.86 : x
  2. Step 2: Convert to fraction form
    3,875.25/5,347.90 = 2,106.86/x
  3. Step 3: Cross multiply
    3,875.25x = 5,347.90 × 2,106.86
  4. Step 4: Simplify right side
    3,875.25x = 11,267,281.86
  5. Step 5: Solve for x
    x = 11,267,281.86/3,875.25
  6. Step 6: Final answer
    x = 2,907.50

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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.