Home / 2,831.91-3,909.96-1,770.09

Finding the Fourth Proportional to 2,831.91, 3,909.96 and 1,770.09

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Solution

The fourth proportional to 2,831.91, 3,909.96 and 1,770.09 is: 2,443.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.91 : 3,909.96 = 1,770.09 : x
  2. Step 2: Convert to fraction form
    2,831.91/3,909.96 = 1,770.09/x
  3. Step 3: Cross multiply
    2,831.91x = 3,909.96 × 1,770.09
  4. Step 4: Simplify right side
    2,831.91x = 6,920,981.10
  5. Step 5: Solve for x
    x = 6,920,981.10/2,831.91
  6. Step 6: Final answer
    x = 2,443.93

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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.