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Finding the Fourth Proportional to 7,800.66, 10,764.14 and 4,443.21

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Solution

The fourth proportional to 7,800.66, 10,764.14 and 4,443.21 is: 6,131.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,800.66 : 10,764.14 = 4,443.21 : x
  2. Step 2: Convert to fraction form
    7,800.66/10,764.14 = 4,443.21/x
  3. Step 3: Cross multiply
    7,800.66x = 10,764.14 × 4,443.21
  4. Step 4: Simplify right side
    7,800.66x = 47,827,334.49
  5. Step 5: Solve for x
    x = 47,827,334.49/7,800.66
  6. Step 6: Final answer
    x = 6,131.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.