Home / 7,124.22-9,831.45-3,980.46

Finding the Fourth Proportional to 7,124.22, 9,831.45 and 3,980.46

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Solution

The fourth proportional to 7,124.22, 9,831.45 and 3,980.46 is: 5,493.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.22 : 9,831.45 = 3,980.46 : x
  2. Step 2: Convert to fraction form
    7,124.22/9,831.45 = 3,980.46/x
  3. Step 3: Cross multiply
    7,124.22x = 9,831.45 × 3,980.46
  4. Step 4: Simplify right side
    7,124.22x = 39,133,693.47
  5. Step 5: Solve for x
    x = 39,133,693.47/7,124.22
  6. Step 6: Final answer
    x = 5,493.05

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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.