Home / 1,432.36-1,976.70-1,012.60

Finding the Fourth Proportional to 1,432.36, 1,976.70 and 1,012.60

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Solution

The fourth proportional to 1,432.36, 1,976.70 and 1,012.60 is: 1,397.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.36 : 1,976.70 = 1,012.60 : x
  2. Step 2: Convert to fraction form
    1,432.36/1,976.70 = 1,012.60/x
  3. Step 3: Cross multiply
    1,432.36x = 1,976.70 × 1,012.60
  4. Step 4: Simplify right side
    1,432.36x = 2,001,606.42
  5. Step 5: Solve for x
    x = 2,001,606.42/1,432.36
  6. Step 6: Final answer
    x = 1,397.42

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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.