Home / 1,257.12-1,885.26-526.56

Finding the Fourth Proportional to 1,257.12, 1,885.26 and 526.56

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Solution

The fourth proportional to 1,257.12, 1,885.26 and 526.56 is: 789.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257.12 : 1,885.26 = 526.56 : x
  2. Step 2: Convert to fraction form
    1,257.12/1,885.26 = 526.56/x
  3. Step 3: Cross multiply
    1,257.12x = 1,885.26 × 526.56
  4. Step 4: Simplify right side
    1,257.12x = 992,702.51
  5. Step 5: Solve for x
    x = 992,702.51/1,257.12
  6. Step 6: Final answer
    x = 789.66

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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.