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Finding the Fourth Proportional to 6,666.48, 9,992.88 and 2,505.72

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Solution

The fourth proportional to 6,666.48, 9,992.88 and 2,505.72 is: 3,756.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,666.48 : 9,992.88 = 2,505.72 : x
  2. Step 2: Convert to fraction form
    6,666.48/9,992.88 = 2,505.72/x
  3. Step 3: Cross multiply
    6,666.48x = 9,992.88 × 2,505.72
  4. Step 4: Simplify right side
    6,666.48x = 25,039,359.27
  5. Step 5: Solve for x
    x = 25,039,359.27/6,666.48
  6. Step 6: Final answer
    x = 3,756.01

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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.