Home / 2,130.48-3,191.52-1,397.82

Finding the Fourth Proportional to 2,130.48, 3,191.52 and 1,397.82

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Solution

The fourth proportional to 2,130.48, 3,191.52 and 1,397.82 is: 2,093.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.48 : 3,191.52 = 1,397.82 : x
  2. Step 2: Convert to fraction form
    2,130.48/3,191.52 = 1,397.82/x
  3. Step 3: Cross multiply
    2,130.48x = 3,191.52 × 1,397.82
  4. Step 4: Simplify right side
    2,130.48x = 4,461,170.49
  5. Step 5: Solve for x
    x = 4,461,170.49/2,130.48
  6. Step 6: Final answer
    x = 2,093.97

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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.