Home / 2,231.04-3,347.70-915.75

Finding the Fourth Proportional to 2,231.04, 3,347.70 and 915.75

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Solution

The fourth proportional to 2,231.04, 3,347.70 and 915.75 is: 1,374.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,231.04 : 3,347.70 = 915.75 : x
  2. Step 2: Convert to fraction form
    2,231.04/3,347.70 = 915.75/x
  3. Step 3: Cross multiply
    2,231.04x = 3,347.70 × 915.75
  4. Step 4: Simplify right side
    2,231.04x = 3,065,656.28
  5. Step 5: Solve for x
    x = 3,065,656.28/2,231.04
  6. Step 6: Final answer
    x = 1,374.09

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1.5x scale

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.