Home / 5,669.32-7,819.62-3,905.20

Finding the Fourth Proportional to 5,669.32, 7,819.62 and 3,905.20

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Solution

The fourth proportional to 5,669.32, 7,819.62 and 3,905.20 is: 5,386.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,669.32 : 7,819.62 = 3,905.20 : x
  2. Step 2: Convert to fraction form
    5,669.32/7,819.62 = 3,905.20/x
  3. Step 3: Cross multiply
    5,669.32x = 7,819.62 × 3,905.20
  4. Step 4: Simplify right side
    5,669.32x = 30,537,180.02
  5. Step 5: Solve for x
    x = 30,537,180.02/5,669.32
  6. Step 6: Final answer
    x = 5,386.39

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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.