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Finding the Fourth Proportional to 4,689.86, 6,472.79 and 2,700.05

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Solution

The fourth proportional to 4,689.86, 6,472.79 and 2,700.05 is: 3,726.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,689.86 : 6,472.79 = 2,700.05 : x
  2. Step 2: Convert to fraction form
    4,689.86/6,472.79 = 2,700.05/x
  3. Step 3: Cross multiply
    4,689.86x = 6,472.79 × 2,700.05
  4. Step 4: Simplify right side
    4,689.86x = 17,476,856.64
  5. Step 5: Solve for x
    x = 17,476,856.64/4,689.86
  6. Step 6: Final answer
    x = 3,726.52

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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.