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Finding the Fourth Proportional to 6,675.40, 9,980.70 and 4,925.80

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Solution

The fourth proportional to 6,675.40, 9,980.70 and 4,925.80 is: 7,364.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,675.40 : 9,980.70 = 4,925.80 : x
  2. Step 2: Convert to fraction form
    6,675.40/9,980.70 = 4,925.80/x
  3. Step 3: Cross multiply
    6,675.40x = 9,980.70 × 4,925.80
  4. Step 4: Simplify right side
    6,675.40x = 49,162,932.06
  5. Step 5: Solve for x
    x = 49,162,932.06/6,675.40
  6. Step 6: Final answer
    x = 7,364.79

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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.