Home / 6,465.48-8,919.36-3,945.60

Finding the Fourth Proportional to 6,465.48, 8,919.36 and 3,945.60

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Solution

The fourth proportional to 6,465.48, 8,919.36 and 3,945.60 is: 5,443.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,465.48 : 8,919.36 = 3,945.60 : x
  2. Step 2: Convert to fraction form
    6,465.48/8,919.36 = 3,945.60/x
  3. Step 3: Cross multiply
    6,465.48x = 8,919.36 × 3,945.60
  4. Step 4: Simplify right side
    6,465.48x = 35,192,226.82
  5. Step 5: Solve for x
    x = 35,192,226.82/6,465.48
  6. Step 6: Final answer
    x = 5,443.10

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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.