Home / 7,459.64-11,189.28-1,912.88

Finding the Fourth Proportional to 7,459.64, 11,189.28 and 1,912.88

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Solution

The fourth proportional to 7,459.64, 11,189.28 and 1,912.88 is: 2,869.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,459.64 : 11,189.28 = 1,912.88 : x
  2. Step 2: Convert to fraction form
    7,459.64/11,189.28 = 1,912.88/x
  3. Step 3: Cross multiply
    7,459.64x = 11,189.28 × 1,912.88
  4. Step 4: Simplify right side
    7,459.64x = 21,403,749.93
  5. Step 5: Solve for x
    x = 21,403,749.93/7,459.64
  6. Step 6: Final answer
    x = 2,869.27

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1.5x scale

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.