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Finding the Fourth Proportional to 3,118.79, 4,678.09 and 927.52

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Solution

The fourth proportional to 3,118.79, 4,678.09 and 927.52 is: 1,391.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.79 : 4,678.09 = 927.52 : x
  2. Step 2: Convert to fraction form
    3,118.79/4,678.09 = 927.52/x
  3. Step 3: Cross multiply
    3,118.79x = 4,678.09 × 927.52
  4. Step 4: Simplify right side
    3,118.79x = 4,339,022.04
  5. Step 5: Solve for x
    x = 4,339,022.04/3,118.79
  6. Step 6: Final answer
    x = 1,391.25

Related Problems

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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.