Home / 7,155.12-9,873.80-3,968.54

Finding the Fourth Proportional to 7,155.12, 9,873.80 and 3,968.54

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Solution

The fourth proportional to 7,155.12, 9,873.80 and 3,968.54 is: 5,476.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.12 : 9,873.80 = 3,968.54 : x
  2. Step 2: Convert to fraction form
    7,155.12/9,873.80 = 3,968.54/x
  3. Step 3: Cross multiply
    7,155.12x = 9,873.80 × 3,968.54
  4. Step 4: Simplify right side
    7,155.12x = 39,184,570.25
  5. Step 5: Solve for x
    x = 39,184,570.25/7,155.12
  6. Step 6: Final answer
    x = 5,476.44

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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.