Home / 2,147.07-2,971.08-1,831.86

Finding the Fourth Proportional to 2,147.07, 2,971.08 and 1,831.86

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Solution

The fourth proportional to 2,147.07, 2,971.08 and 1,831.86 is: 2,534.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,147.07 : 2,971.08 = 1,831.86 : x
  2. Step 2: Convert to fraction form
    2,147.07/2,971.08 = 1,831.86/x
  3. Step 3: Cross multiply
    2,147.07x = 2,971.08 × 1,831.86
  4. Step 4: Simplify right side
    2,147.07x = 5,442,602.61
  5. Step 5: Solve for x
    x = 5,442,602.61/2,147.07
  6. Step 6: Final answer
    x = 2,534.90

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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.