Home / 5,431.96-8,155.16-3,485.08

Finding the Fourth Proportional to 5,431.96, 8,155.16 and 3,485.08

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Solution

The fourth proportional to 5,431.96, 8,155.16 and 3,485.08 is: 5,232.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.96 : 8,155.16 = 3,485.08 : x
  2. Step 2: Convert to fraction form
    5,431.96/8,155.16 = 3,485.08/x
  3. Step 3: Cross multiply
    5,431.96x = 8,155.16 × 3,485.08
  4. Step 4: Simplify right side
    5,431.96x = 28,421,385.01
  5. Step 5: Solve for x
    x = 28,421,385.01/5,431.96
  6. Step 6: Final answer
    x = 5,232.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.