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Finding the Fourth Proportional to 5,133.80, 7,700.70 and 4,728.80

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Solution

The fourth proportional to 5,133.80, 7,700.70 and 4,728.80 is: 7,093.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,133.80 : 7,700.70 = 4,728.80 : x
  2. Step 2: Convert to fraction form
    5,133.80/7,700.70 = 4,728.80/x
  3. Step 3: Cross multiply
    5,133.80x = 7,700.70 × 4,728.80
  4. Step 4: Simplify right side
    5,133.80x = 36,415,070.16
  5. Step 5: Solve for x
    x = 36,415,070.16/5,133.80
  6. Step 6: Final answer
    x = 7,093.20

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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.