Home / 7,764.28-11,646.27-1,920.89

Finding the Fourth Proportional to 7,764.28, 11,646.27 and 1,920.89

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Solution

The fourth proportional to 7,764.28, 11,646.27 and 1,920.89 is: 2,881.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,764.28 : 11,646.27 = 1,920.89 : x
  2. Step 2: Convert to fraction form
    7,764.28/11,646.27 = 1,920.89/x
  3. Step 3: Cross multiply
    7,764.28x = 11,646.27 × 1,920.89
  4. Step 4: Simplify right side
    7,764.28x = 22,371,150.15
  5. Step 5: Solve for x
    x = 22,371,150.15/7,764.28
  6. Step 6: Final answer
    x = 2,881.29

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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.