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Finding the Fourth Proportional to 4,988.91, 6,884.79 and 2,864.79

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Solution

The fourth proportional to 4,988.91, 6,884.79 and 2,864.79 is: 3,953.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,988.91 : 6,884.79 = 2,864.79 : x
  2. Step 2: Convert to fraction form
    4,988.91/6,884.79 = 2,864.79/x
  3. Step 3: Cross multiply
    4,988.91x = 6,884.79 × 2,864.79
  4. Step 4: Simplify right side
    4,988.91x = 19,723,477.54
  5. Step 5: Solve for x
    x = 19,723,477.54/4,988.91
  6. Step 6: Final answer
    x = 3,953.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.