Home / 2,315.21-3,473.42-928.60

Finding the Fourth Proportional to 2,315.21, 3,473.42 and 928.60

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Solution

The fourth proportional to 2,315.21, 3,473.42 and 928.60 is: 1,393.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.21 : 3,473.42 = 928.60 : x
  2. Step 2: Convert to fraction form
    2,315.21/3,473.42 = 928.60/x
  3. Step 3: Cross multiply
    2,315.21x = 3,473.42 × 928.60
  4. Step 4: Simplify right side
    2,315.21x = 3,225,395.80
  5. Step 5: Solve for x
    x = 3,225,395.80/2,315.21
  6. Step 6: Final answer
    x = 1,393.13

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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.