Home / 3,875.08-5,347.64-2,106.72

Finding the Fourth Proportional to 3,875.08, 5,347.64 and 2,106.72

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Solution

The fourth proportional to 3,875.08, 5,347.64 and 2,106.72 is: 2,907.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,875.08 : 5,347.64 = 2,106.72 : x
  2. Step 2: Convert to fraction form
    3,875.08/5,347.64 = 2,106.72/x
  3. Step 3: Cross multiply
    3,875.08x = 5,347.64 × 2,106.72
  4. Step 4: Simplify right side
    3,875.08x = 11,265,980.14
  5. Step 5: Solve for x
    x = 11,265,980.14/3,875.08
  6. Step 6: Final answer
    x = 2,907.29

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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.