Home / 1,430.02-2,144.73-403.78

Finding the Fourth Proportional to 1,430.02, 2,144.73 and 403.78

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Solution

The fourth proportional to 1,430.02, 2,144.73 and 403.78 is: 605.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.02 : 2,144.73 = 403.78 : x
  2. Step 2: Convert to fraction form
    1,430.02/2,144.73 = 403.78/x
  3. Step 3: Cross multiply
    1,430.02x = 2,144.73 × 403.78
  4. Step 4: Simplify right side
    1,430.02x = 865,999.08
  5. Step 5: Solve for x
    x = 865,999.08/1,430.02
  6. Step 6: Final answer
    x = 605.59

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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.