Home / 2,430.87-3,643.24-1,320.27

Finding the Fourth Proportional to 2,430.87, 3,643.24 and 1,320.27

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Solution

The fourth proportional to 2,430.87, 3,643.24 and 1,320.27 is: 1,978.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,430.87 : 3,643.24 = 1,320.27 : x
  2. Step 2: Convert to fraction form
    2,430.87/3,643.24 = 1,320.27/x
  3. Step 3: Cross multiply
    2,430.87x = 3,643.24 × 1,320.27
  4. Step 4: Simplify right side
    2,430.87x = 4,810,060.47
  5. Step 5: Solve for x
    x = 4,810,060.47/2,430.87
  6. Step 6: Final answer
    x = 1,978.74

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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.