Home / 3,890.51-5,831.63-2,654.86

Finding the Fourth Proportional to 3,890.51, 5,831.63 and 2,654.86

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Solution

The fourth proportional to 3,890.51, 5,831.63 and 2,654.86 is: 3,979.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.51 : 5,831.63 = 2,654.86 : x
  2. Step 2: Convert to fraction form
    3,890.51/5,831.63 = 2,654.86/x
  3. Step 3: Cross multiply
    3,890.51x = 5,831.63 × 2,654.86
  4. Step 4: Simplify right side
    3,890.51x = 15,482,118.79
  5. Step 5: Solve for x
    x = 15,482,118.79/3,890.51
  6. Step 6: Final answer
    x = 3,979.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.