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Finding the Fourth Proportional to 4,920.12, 6,789.77 and 2,681.99

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Solution

The fourth proportional to 4,920.12, 6,789.77 and 2,681.99 is: 3,701.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.12 : 6,789.77 = 2,681.99 : x
  2. Step 2: Convert to fraction form
    4,920.12/6,789.77 = 2,681.99/x
  3. Step 3: Cross multiply
    4,920.12x = 6,789.77 × 2,681.99
  4. Step 4: Simplify right side
    4,920.12x = 18,210,095.24
  5. Step 5: Solve for x
    x = 18,210,095.24/4,920.12
  6. Step 6: Final answer
    x = 3,701.15

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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.