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Finding the Fourth Proportional to 4,728.76, 7,058.75 and 4,338.74

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Solution

The fourth proportional to 4,728.76, 7,058.75 and 4,338.74 is: 6,476.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,728.76 : 7,058.75 = 4,338.74 : x
  2. Step 2: Convert to fraction form
    4,728.76/7,058.75 = 4,338.74/x
  3. Step 3: Cross multiply
    4,728.76x = 7,058.75 × 4,338.74
  4. Step 4: Simplify right side
    4,728.76x = 30,626,076.93
  5. Step 5: Solve for x
    x = 30,626,076.93/4,728.76
  6. Step 6: Final answer
    x = 6,476.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.