Home / 2,782.46-3,831.63-2,487.62

Finding the Fourth Proportional to 2,782.46, 3,831.63 and 2,487.62

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Solution

The fourth proportional to 2,782.46, 3,831.63 and 2,487.62 is: 3,425.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.46 : 3,831.63 = 2,487.62 : x
  2. Step 2: Convert to fraction form
    2,782.46/3,831.63 = 2,487.62/x
  3. Step 3: Cross multiply
    2,782.46x = 3,831.63 × 2,487.62
  4. Step 4: Simplify right side
    2,782.46x = 9,531,639.42
  5. Step 5: Solve for x
    x = 9,531,639.42/2,782.46
  6. Step 6: Final answer
    x = 3,425.62

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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.