Home / 7,124.47-9,831.46-3,937.60

Finding the Fourth Proportional to 7,124.47, 9,831.46 and 3,937.60

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Solution

The fourth proportional to 7,124.47, 9,831.46 and 3,937.60 is: 5,433.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.47 : 9,831.46 = 3,937.60 : x
  2. Step 2: Convert to fraction form
    7,124.47/9,831.46 = 3,937.60/x
  3. Step 3: Cross multiply
    7,124.47x = 9,831.46 × 3,937.60
  4. Step 4: Simplify right side
    7,124.47x = 38,712,306.49
  5. Step 5: Solve for x
    x = 38,712,306.49/7,124.47
  6. Step 6: Final answer
    x = 5,433.71

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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.