Home / 2,430.99-3,643.43-1,320.39

Finding the Fourth Proportional to 2,430.99, 3,643.43 and 1,320.39

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Solution

The fourth proportional to 2,430.99, 3,643.43 and 1,320.39 is: 1,978.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,430.99 : 3,643.43 = 1,320.39 : x
  2. Step 2: Convert to fraction form
    2,430.99/3,643.43 = 1,320.39/x
  3. Step 3: Cross multiply
    2,430.99x = 3,643.43 × 1,320.39
  4. Step 4: Simplify right side
    2,430.99x = 4,810,741.94
  5. Step 5: Solve for x
    x = 4,810,741.94/2,430.99
  6. Step 6: Final answer
    x = 1,978.92

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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.