Home / 1,391.49-2,087.50-526.41

Finding the Fourth Proportional to 1,391.49, 2,087.50 and 526.41

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Solution

The fourth proportional to 1,391.49, 2,087.50 and 526.41 is: 789.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391.49 : 2,087.50 = 526.41 : x
  2. Step 2: Convert to fraction form
    1,391.49/2,087.50 = 526.41/x
  3. Step 3: Cross multiply
    1,391.49x = 2,087.50 × 526.41
  4. Step 4: Simplify right side
    1,391.49x = 1,098,880.88
  5. Step 5: Solve for x
    x = 1,098,880.88/1,391.49
  6. Step 6: Final answer
    x = 789.72

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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.