Home / 1,509.05-2,262.36-1,387.55

Finding the Fourth Proportional to 1,509.05, 2,262.36 and 1,387.55

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Solution

The fourth proportional to 1,509.05, 2,262.36 and 1,387.55 is: 2,080.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,509.05 : 2,262.36 = 1,387.55 : x
  2. Step 2: Convert to fraction form
    1,509.05/2,262.36 = 1,387.55/x
  3. Step 3: Cross multiply
    1,509.05x = 2,262.36 × 1,387.55
  4. Step 4: Simplify right side
    1,509.05x = 3,139,137.62
  5. Step 5: Solve for x
    x = 3,139,137.62/1,509.05
  6. Step 6: Final answer
    x = 2,080.21

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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.