Home / 7,851.45-10,831.35-5,017.38

Finding the Fourth Proportional to 7,851.45, 10,831.35 and 5,017.38

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Solution

The fourth proportional to 7,851.45, 10,831.35 and 5,017.38 is: 6,921.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.45 : 10,831.35 = 5,017.38 : x
  2. Step 2: Convert to fraction form
    7,851.45/10,831.35 = 5,017.38/x
  3. Step 3: Cross multiply
    7,851.45x = 10,831.35 × 5,017.38
  4. Step 4: Simplify right side
    7,851.45x = 54,344,998.86
  5. Step 5: Solve for x
    x = 54,344,998.86/7,851.45
  6. Step 6: Final answer
    x = 6,921.65

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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.