Home / 1,905.14-2,631.12-1,831.34

Finding the Fourth Proportional to 1,905.14, 2,631.12 and 1,831.34

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Solution

The fourth proportional to 1,905.14, 2,631.12 and 1,831.34 is: 2,529.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.14 : 2,631.12 = 1,831.34 : x
  2. Step 2: Convert to fraction form
    1,905.14/2,631.12 = 1,831.34/x
  3. Step 3: Cross multiply
    1,905.14x = 2,631.12 × 1,831.34
  4. Step 4: Simplify right side
    1,905.14x = 4,818,462.15
  5. Step 5: Solve for x
    x = 4,818,462.15/1,905.14
  6. Step 6: Final answer
    x = 2,529.20

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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.