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Finding the Fourth Proportional to 6,988.80, 10,488.60 and 4,797.48

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Solution

The fourth proportional to 6,988.80, 10,488.60 and 4,797.48 is: 7,199.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,988.80 : 10,488.60 = 4,797.48 : x
  2. Step 2: Convert to fraction form
    6,988.80/10,488.60 = 4,797.48/x
  3. Step 3: Cross multiply
    6,988.80x = 10,488.60 × 4,797.48
  4. Step 4: Simplify right side
    6,988.80x = 50,318,848.73
  5. Step 5: Solve for x
    x = 50,318,848.73/6,988.80
  6. Step 6: Final answer
    x = 7,199.93

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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.