Home / 1,440.67-2,149.76-1,285.53

Finding the Fourth Proportional to 1,440.67, 2,149.76 and 1,285.53

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Solution

The fourth proportional to 1,440.67, 2,149.76 and 1,285.53 is: 1,918.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.67 : 2,149.76 = 1,285.53 : x
  2. Step 2: Convert to fraction form
    1,440.67/2,149.76 = 1,285.53/x
  3. Step 3: Cross multiply
    1,440.67x = 2,149.76 × 1,285.53
  4. Step 4: Simplify right side
    1,440.67x = 2,763,580.97
  5. Step 5: Solve for x
    x = 2,763,580.97/1,440.67
  6. Step 6: Final answer
    x = 1,918.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.