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Finding the Fourth Proportional to 7,120.89, 9,823.82 and 4,763.79

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Solution

The fourth proportional to 7,120.89, 9,823.82 and 4,763.79 is: 6,572.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.89 : 9,823.82 = 4,763.79 : x
  2. Step 2: Convert to fraction form
    7,120.89/9,823.82 = 4,763.79/x
  3. Step 3: Cross multiply
    7,120.89x = 9,823.82 × 4,763.79
  4. Step 4: Simplify right side
    7,120.89x = 46,798,591.66
  5. Step 5: Solve for x
    x = 46,798,591.66/7,120.89
  6. Step 6: Final answer
    x = 6,572.01

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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.