Home / 2,509.55-3,462.95-1,390.43

Finding the Fourth Proportional to 2,509.55, 3,462.95 and 1,390.43

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Solution

The fourth proportional to 2,509.55, 3,462.95 and 1,390.43 is: 1,918.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,509.55 : 3,462.95 = 1,390.43 : x
  2. Step 2: Convert to fraction form
    2,509.55/3,462.95 = 1,390.43/x
  3. Step 3: Cross multiply
    2,509.55x = 3,462.95 × 1,390.43
  4. Step 4: Simplify right side
    2,509.55x = 4,814,965.30
  5. Step 5: Solve for x
    x = 4,814,965.30/2,509.55
  6. Step 6: Final answer
    x = 1,918.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.