Home / 9,181.12-12,670.14-5,455.12

Finding the Fourth Proportional to 9,181.12, 12,670.14 and 5,455.12

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Solution

The fourth proportional to 9,181.12, 12,670.14 and 5,455.12 is: 7,528.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,181.12 : 12,670.14 = 5,455.12 : x
  2. Step 2: Convert to fraction form
    9,181.12/12,670.14 = 5,455.12/x
  3. Step 3: Cross multiply
    9,181.12x = 12,670.14 × 5,455.12
  4. Step 4: Simplify right side
    9,181.12x = 69,117,134.12
  5. Step 5: Solve for x
    x = 69,117,134.12/9,181.12
  6. Step 6: Final answer
    x = 7,528.18

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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.