Home / 1,446.55-2,170.73-831.45

Finding the Fourth Proportional to 1,446.55, 2,170.73 and 831.45

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Solution

The fourth proportional to 1,446.55, 2,170.73 and 831.45 is: 1,247.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,446.55 : 2,170.73 = 831.45 : x
  2. Step 2: Convert to fraction form
    1,446.55/2,170.73 = 831.45/x
  3. Step 3: Cross multiply
    1,446.55x = 2,170.73 × 831.45
  4. Step 4: Simplify right side
    1,446.55x = 1,804,853.46
  5. Step 5: Solve for x
    x = 1,804,853.46/1,446.55
  6. Step 6: Final answer
    x = 1,247.70

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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.