Home / 1,258.13-1,886.59-526.70

Finding the Fourth Proportional to 1,258.13, 1,886.59 and 526.70

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Solution

The fourth proportional to 1,258.13, 1,886.59 and 526.70 is: 789.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258.13 : 1,886.59 = 526.70 : x
  2. Step 2: Convert to fraction form
    1,258.13/1,886.59 = 526.70/x
  3. Step 3: Cross multiply
    1,258.13x = 1,886.59 × 526.70
  4. Step 4: Simplify right side
    1,258.13x = 993,672.33
  5. Step 5: Solve for x
    x = 993,672.33/1,258.13
  6. Step 6: Final answer
    x = 789.80

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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.