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Finding the Fourth Proportional to 2,909.79, 4,015.53 and 1,714.83

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Solution

The fourth proportional to 2,909.79, 4,015.53 and 1,714.83 is: 2,366.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.79 : 4,015.53 = 1,714.83 : x
  2. Step 2: Convert to fraction form
    2,909.79/4,015.53 = 1,714.83/x
  3. Step 3: Cross multiply
    2,909.79x = 4,015.53 × 1,714.83
  4. Step 4: Simplify right side
    2,909.79x = 6,885,951.31
  5. Step 5: Solve for x
    x = 6,885,951.31/2,909.79
  6. Step 6: Final answer
    x = 2,366.48

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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.