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Finding the Fourth Proportional to 3,072.17, 4,609.15 and 992.13

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Solution

The fourth proportional to 3,072.17, 4,609.15 and 992.13 is: 1,488.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.17 : 4,609.15 = 992.13 : x
  2. Step 2: Convert to fraction form
    3,072.17/4,609.15 = 992.13/x
  3. Step 3: Cross multiply
    3,072.17x = 4,609.15 × 992.13
  4. Step 4: Simplify right side
    3,072.17x = 4,572,875.99
  5. Step 5: Solve for x
    x = 4,572,875.99/3,072.17
  6. Step 6: Final answer
    x = 1,488.48

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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.