Home / 7,764.67-11,646.70-1,921.13

Finding the Fourth Proportional to 7,764.67, 11,646.70 and 1,921.13

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Solution

The fourth proportional to 7,764.67, 11,646.70 and 1,921.13 is: 2,881.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,764.67 : 11,646.70 = 1,921.13 : x
  2. Step 2: Convert to fraction form
    7,764.67/11,646.70 = 1,921.13/x
  3. Step 3: Cross multiply
    7,764.67x = 11,646.70 × 1,921.13
  4. Step 4: Simplify right side
    7,764.67x = 22,374,824.77
  5. Step 5: Solve for x
    x = 22,374,824.77/7,764.67
  6. Step 6: Final answer
    x = 2,881.62

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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.