Home / 7,831.77-11,748.07-1,988.43

Finding the Fourth Proportional to 7,831.77, 11,748.07 and 1,988.43

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Solution

The fourth proportional to 7,831.77, 11,748.07 and 1,988.43 is: 2,982.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.77 : 11,748.07 = 1,988.43 : x
  2. Step 2: Convert to fraction form
    7,831.77/11,748.07 = 1,988.43/x
  3. Step 3: Cross multiply
    7,831.77x = 11,748.07 × 1,988.43
  4. Step 4: Simplify right side
    7,831.77x = 23,360,214.83
  5. Step 5: Solve for x
    x = 23,360,214.83/7,831.77
  6. Step 6: Final answer
    x = 2,982.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.