Home / 7,666.81-11,490.40-3,968.35

Finding the Fourth Proportional to 7,666.81, 11,490.40 and 3,968.35

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Solution

The fourth proportional to 7,666.81, 11,490.40 and 3,968.35 is: 5,947.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,666.81 : 11,490.40 = 3,968.35 : x
  2. Step 2: Convert to fraction form
    7,666.81/11,490.40 = 3,968.35/x
  3. Step 3: Cross multiply
    7,666.81x = 11,490.40 × 3,968.35
  4. Step 4: Simplify right side
    7,666.81x = 45,597,928.84
  5. Step 5: Solve for x
    x = 45,597,928.84/7,666.81
  6. Step 6: Final answer
    x = 5,947.44

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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.