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Finding the Fourth Proportional to 6,666.48, 9,991.44 and 3,746.88

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Solution

The fourth proportional to 6,666.48, 9,991.44 and 3,746.88 is: 5,615.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,666.48 : 9,991.44 = 3,746.88 : x
  2. Step 2: Convert to fraction form
    6,666.48/9,991.44 = 3,746.88/x
  3. Step 3: Cross multiply
    6,666.48x = 9,991.44 × 3,746.88
  4. Step 4: Simplify right side
    6,666.48x = 37,436,726.71
  5. Step 5: Solve for x
    x = 37,436,726.71/6,666.48
  6. Step 6: Final answer
    x = 5,615.67

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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.