Home / 4,905.36-6,765.12-3,136.32

Finding the Fourth Proportional to 4,905.36, 6,765.12 and 3,136.32

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Solution

The fourth proportional to 4,905.36, 6,765.12 and 3,136.32 is: 4,325.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,905.36 : 6,765.12 = 3,136.32 : x
  2. Step 2: Convert to fraction form
    4,905.36/6,765.12 = 3,136.32/x
  3. Step 3: Cross multiply
    4,905.36x = 6,765.12 × 3,136.32
  4. Step 4: Simplify right side
    4,905.36x = 21,217,581.16
  5. Step 5: Solve for x
    x = 21,217,581.16/4,905.36
  6. Step 6: Final answer
    x = 4,325.39

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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.