Home / 2,578.61-3,558.36-1,399.68

Finding the Fourth Proportional to 2,578.61, 3,558.36 and 1,399.68

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Solution

The fourth proportional to 2,578.61, 3,558.36 and 1,399.68 is: 1,931.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.61 : 3,558.36 = 1,399.68 : x
  2. Step 2: Convert to fraction form
    2,578.61/3,558.36 = 1,399.68/x
  3. Step 3: Cross multiply
    2,578.61x = 3,558.36 × 1,399.68
  4. Step 4: Simplify right side
    2,578.61x = 4,980,558.76
  5. Step 5: Solve for x
    x = 4,980,558.76/2,578.61
  6. Step 6: Final answer
    x = 1,931.49

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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.