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Finding the Fourth Proportional to 4,728.04, 7,092.05 and 4,721.20

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Solution

The fourth proportional to 4,728.04, 7,092.05 and 4,721.20 is: 7,081.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,728.04 : 7,092.05 = 4,721.20 : x
  2. Step 2: Convert to fraction form
    4,728.04/7,092.05 = 4,721.20/x
  3. Step 3: Cross multiply
    4,728.04x = 7,092.05 × 4,721.20
  4. Step 4: Simplify right side
    4,728.04x = 33,482,986.46
  5. Step 5: Solve for x
    x = 33,482,986.46/4,728.04
  6. Step 6: Final answer
    x = 7,081.80

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.