Home / 2,526.40-3,787.80-1,138.60

Finding the Fourth Proportional to 2,526.40, 3,787.80 and 1,138.60

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Solution

The fourth proportional to 2,526.40, 3,787.80 and 1,138.60 is: 1,707.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,526.40 : 3,787.80 = 1,138.60 : x
  2. Step 2: Convert to fraction form
    2,526.40/3,787.80 = 1,138.60/x
  3. Step 3: Cross multiply
    2,526.40x = 3,787.80 × 1,138.60
  4. Step 4: Simplify right side
    2,526.40x = 4,312,789.08
  5. Step 5: Solve for x
    x = 4,312,789.08/2,526.40
  6. Step 6: Final answer
    x = 1,707.09

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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.