Home / 2,518.86-3,475.80-1,399.85

Finding the Fourth Proportional to 2,518.86, 3,475.80 and 1,399.85

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Solution

The fourth proportional to 2,518.86, 3,475.80 and 1,399.85 is: 1,931.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,518.86 : 3,475.80 = 1,399.85 : x
  2. Step 2: Convert to fraction form
    2,518.86/3,475.80 = 1,399.85/x
  3. Step 3: Cross multiply
    2,518.86x = 3,475.80 × 1,399.85
  4. Step 4: Simplify right side
    2,518.86x = 4,865,581.25
  5. Step 5: Solve for x
    x = 4,865,581.25/2,518.86
  6. Step 6: Final answer
    x = 1,931.66

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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.