Home / 5,619.78-7,748.10-3,848.34

Finding the Fourth Proportional to 5,619.78, 7,748.10 and 3,848.34

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Solution

The fourth proportional to 5,619.78, 7,748.10 and 3,848.34 is: 5,305.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.78 : 7,748.10 = 3,848.34 : x
  2. Step 2: Convert to fraction form
    5,619.78/7,748.10 = 3,848.34/x
  3. Step 3: Cross multiply
    5,619.78x = 7,748.10 × 3,848.34
  4. Step 4: Simplify right side
    5,619.78x = 29,817,323.15
  5. Step 5: Solve for x
    x = 29,817,323.15/5,619.78
  6. Step 6: Final answer
    x = 5,305.78

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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.