Home / 6,464.16-8,916.48-3,945.60

Finding the Fourth Proportional to 6,464.16, 8,916.48 and 3,945.60

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Solution

The fourth proportional to 6,464.16, 8,916.48 and 3,945.60 is: 5,442.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,464.16 : 8,916.48 = 3,945.60 : x
  2. Step 2: Convert to fraction form
    6,464.16/8,916.48 = 3,945.60/x
  3. Step 3: Cross multiply
    6,464.16x = 8,916.48 × 3,945.60
  4. Step 4: Simplify right side
    6,464.16x = 35,180,863.49
  5. Step 5: Solve for x
    x = 35,180,863.49/6,464.16
  6. Step 6: Final answer
    x = 5,442.45

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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.