Home / 1,392.24-2,087.28-526.48

Finding the Fourth Proportional to 1,392.24, 2,087.28 and 526.48

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Solution

The fourth proportional to 1,392.24, 2,087.28 and 526.48 is: 789.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.24 : 2,087.28 = 526.48 : x
  2. Step 2: Convert to fraction form
    1,392.24/2,087.28 = 526.48/x
  3. Step 3: Cross multiply
    1,392.24x = 2,087.28 × 526.48
  4. Step 4: Simplify right side
    1,392.24x = 1,098,911.17
  5. Step 5: Solve for x
    x = 1,098,911.17/1,392.24
  6. Step 6: Final answer
    x = 789.31

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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.