Home / 1,258.34-1,885.26-1,122.60

Finding the Fourth Proportional to 1,258.34, 1,885.26 and 1,122.60

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Solution

The fourth proportional to 1,258.34, 1,885.26 and 1,122.60 is: 1,681.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258.34 : 1,885.26 = 1,122.60 : x
  2. Step 2: Convert to fraction form
    1,258.34/1,885.26 = 1,122.60/x
  3. Step 3: Cross multiply
    1,258.34x = 1,885.26 × 1,122.60
  4. Step 4: Simplify right side
    1,258.34x = 2,116,392.88
  5. Step 5: Solve for x
    x = 2,116,392.88/1,258.34
  6. Step 6: Final answer
    x = 1,681.89

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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.