Home / 1,430.25-1,971.73-1,076.23

Finding the Fourth Proportional to 1,430.25, 1,971.73 and 1,076.23

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Solution

The fourth proportional to 1,430.25, 1,971.73 and 1,076.23 is: 1,483.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.25 : 1,971.73 = 1,076.23 : x
  2. Step 2: Convert to fraction form
    1,430.25/1,971.73 = 1,076.23/x
  3. Step 3: Cross multiply
    1,430.25x = 1,971.73 × 1,076.23
  4. Step 4: Simplify right side
    1,430.25x = 2,122,029.60
  5. Step 5: Solve for x
    x = 2,122,029.60/1,430.25
  6. Step 6: Final answer
    x = 1,483.68

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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.