Home / 2,666.26-3,678.13-1,722.86

Finding the Fourth Proportional to 2,666.26, 3,678.13 and 1,722.86

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Solution

The fourth proportional to 2,666.26, 3,678.13 and 1,722.86 is: 2,376.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,666.26 : 3,678.13 = 1,722.86 : x
  2. Step 2: Convert to fraction form
    2,666.26/3,678.13 = 1,722.86/x
  3. Step 3: Cross multiply
    2,666.26x = 3,678.13 × 1,722.86
  4. Step 4: Simplify right side
    2,666.26x = 6,336,909.19
  5. Step 5: Solve for x
    x = 6,336,909.19/2,666.26
  6. Step 6: Final answer
    x = 2,376.70

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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.