Home / 7,890.60-11,831.76-2,343.18

Finding the Fourth Proportional to 7,890.60, 11,831.76 and 2,343.18

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Solution

The fourth proportional to 7,890.60, 11,831.76 and 2,343.18 is: 3,513.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.60 : 11,831.76 = 2,343.18 : x
  2. Step 2: Convert to fraction form
    7,890.60/11,831.76 = 2,343.18/x
  3. Step 3: Cross multiply
    7,890.60x = 11,831.76 × 2,343.18
  4. Step 4: Simplify right side
    7,890.60x = 27,723,943.40
  5. Step 5: Solve for x
    x = 27,723,943.40/7,890.60
  6. Step 6: Final answer
    x = 3,513.54

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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.