Home / 2,813.48-3,881.40-1,818.86

Finding the Fourth Proportional to 2,813.48, 3,881.40 and 1,818.86

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Solution

The fourth proportional to 2,813.48, 3,881.40 and 1,818.86 is: 2,509.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.48 : 3,881.40 = 1,818.86 : x
  2. Step 2: Convert to fraction form
    2,813.48/3,881.40 = 1,818.86/x
  3. Step 3: Cross multiply
    2,813.48x = 3,881.40 × 1,818.86
  4. Step 4: Simplify right side
    2,813.48x = 7,059,723.20
  5. Step 5: Solve for x
    x = 7,059,723.20/2,813.48
  6. Step 6: Final answer
    x = 2,509.25

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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.