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Finding the Fourth Proportional to 7,764.02, 11,645.90 and 1,920.63

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Solution

The fourth proportional to 7,764.02, 11,645.90 and 1,920.63 is: 2,880.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,764.02 : 11,645.90 = 1,920.63 : x
  2. Step 2: Convert to fraction form
    7,764.02/11,645.90 = 1,920.63/x
  3. Step 3: Cross multiply
    7,764.02x = 11,645.90 × 1,920.63
  4. Step 4: Simplify right side
    7,764.02x = 22,367,506.19
  5. Step 5: Solve for x
    x = 22,367,506.19/7,764.02
  6. Step 6: Final answer
    x = 2,880.92

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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.