Home / 7,831.12-10,807.20-4,294.72

Finding the Fourth Proportional to 7,831.12, 10,807.20 and 4,294.72

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Solution

The fourth proportional to 7,831.12, 10,807.20 and 4,294.72 is: 5,926.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.12 : 10,807.20 = 4,294.72 : x
  2. Step 2: Convert to fraction form
    7,831.12/10,807.20 = 4,294.72/x
  3. Step 3: Cross multiply
    7,831.12x = 10,807.20 × 4,294.72
  4. Step 4: Simplify right side
    7,831.12x = 46,413,897.98
  5. Step 5: Solve for x
    x = 46,413,897.98/7,831.12
  6. Step 6: Final answer
    x = 5,926.85

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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.