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Finding the Fourth Proportional to 7,765.83, 10,720.85 and 4,783.41

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Solution

The fourth proportional to 7,765.83, 10,720.85 and 4,783.41 is: 6,603.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,765.83 : 10,720.85 = 4,783.41 : x
  2. Step 2: Convert to fraction form
    7,765.83/10,720.85 = 4,783.41/x
  3. Step 3: Cross multiply
    7,765.83x = 10,720.85 × 4,783.41
  4. Step 4: Simplify right side
    7,765.83x = 51,282,197.18
  5. Step 5: Solve for x
    x = 51,282,197.18/7,765.83
  6. Step 6: Final answer
    x = 6,603.57

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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.