Home / 1,442.80-2,153.72-1,336

Finding the Fourth Proportional to 1,442.80, 2,153.72 and 1,336

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Solution

The fourth proportional to 1,442.80, 2,153.72 and 1,336 is: 1,994.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442.80 : 2,153.72 = 1,336 : x
  2. Step 2: Convert to fraction form
    1,442.80/2,153.72 = 1,336/x
  3. Step 3: Cross multiply
    1,442.80x = 2,153.72 × 1,336
  4. Step 4: Simplify right side
    1,442.80x = 2,877,369.92
  5. Step 5: Solve for x
    x = 2,877,369.92/1,442.80
  6. Step 6: Final answer
    x = 1,994.30

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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.