Home / 7,764.48-11,646.60-1,921.14

Finding the Fourth Proportional to 7,764.48, 11,646.60 and 1,921.14

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Solution

The fourth proportional to 7,764.48, 11,646.60 and 1,921.14 is: 2,881.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,764.48 : 11,646.60 = 1,921.14 : x
  2. Step 2: Convert to fraction form
    7,764.48/11,646.60 = 1,921.14/x
  3. Step 3: Cross multiply
    7,764.48x = 11,646.60 × 1,921.14
  4. Step 4: Simplify right side
    7,764.48x = 22,374,749.12
  5. Step 5: Solve for x
    x = 22,374,749.12/7,764.48
  6. Step 6: Final answer
    x = 2,881.68

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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.