Home / 2,127.60-3,191.40-1,539

Finding the Fourth Proportional to 2,127.60, 3,191.40 and 1,539

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Solution

The fourth proportional to 2,127.60, 3,191.40 and 1,539 is: 2,308.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.60 : 3,191.40 = 1,539 : x
  2. Step 2: Convert to fraction form
    2,127.60/3,191.40 = 1,539/x
  3. Step 3: Cross multiply
    2,127.60x = 3,191.40 × 1,539
  4. Step 4: Simplify right side
    2,127.60x = 4,911,564.60
  5. Step 5: Solve for x
    x = 4,911,564.60/2,127.60
  6. Step 6: Final answer
    x = 2,308.50

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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.