Home / 1,442.25-2,151.53-1,391.76

Finding the Fourth Proportional to 1,442.25, 2,151.53 and 1,391.76

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Solution

The fourth proportional to 1,442.25, 2,151.53 and 1,391.76 is: 2,076.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442.25 : 2,151.53 = 1,391.76 : x
  2. Step 2: Convert to fraction form
    1,442.25/2,151.53 = 1,391.76/x
  3. Step 3: Cross multiply
    1,442.25x = 2,151.53 × 1,391.76
  4. Step 4: Simplify right side
    1,442.25x = 2,994,406.43
  5. Step 5: Solve for x
    x = 2,994,406.43/1,442.25
  6. Step 6: Final answer
    x = 2,076.20

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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.