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Finding the Fourth Proportional to 7,813.79, 10,783.28 and 4,277.00

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Solution

The fourth proportional to 7,813.79, 10,783.28 and 4,277.00 is: 5,902.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,813.79 : 10,783.28 = 4,277.00 : x
  2. Step 2: Convert to fraction form
    7,813.79/10,783.28 = 4,277.00/x
  3. Step 3: Cross multiply
    7,813.79x = 10,783.28 × 4,277.00
  4. Step 4: Simplify right side
    7,813.79x = 46,120,126.21
  5. Step 5: Solve for x
    x = 46,120,126.21/7,813.79
  6. Step 6: Final answer
    x = 5,902.41

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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.