Home / 3,848.80-5,765.10-3,438.40

Finding the Fourth Proportional to 3,848.80, 5,765.10 and 3,438.40

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Solution

The fourth proportional to 3,848.80, 5,765.10 and 3,438.40 is: 5,150.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,848.80 : 5,765.10 = 3,438.40 : x
  2. Step 2: Convert to fraction form
    3,848.80/5,765.10 = 3,438.40/x
  3. Step 3: Cross multiply
    3,848.80x = 5,765.10 × 3,438.40
  4. Step 4: Simplify right side
    3,848.80x = 19,822,719.84
  5. Step 5: Solve for x
    x = 19,822,719.84/3,848.80
  6. Step 6: Final answer
    x = 5,150.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.