Home / 1,245.60-1,717.26-931.02

Finding the Fourth Proportional to 1,245.60, 1,717.26 and 931.02

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Solution

The fourth proportional to 1,245.60, 1,717.26 and 931.02 is: 1,283.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.60 : 1,717.26 = 931.02 : x
  2. Step 2: Convert to fraction form
    1,245.60/1,717.26 = 931.02/x
  3. Step 3: Cross multiply
    1,245.60x = 1,717.26 × 931.02
  4. Step 4: Simplify right side
    1,245.60x = 1,598,803.41
  5. Step 5: Solve for x
    x = 1,598,803.41/1,245.60
  6. Step 6: Final answer
    x = 1,283.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.