Home / 2,315.65-3,474.84-928.76

Finding the Fourth Proportional to 2,315.65, 3,474.84 and 928.76

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Solution

The fourth proportional to 2,315.65, 3,474.84 and 928.76 is: 1,393.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.65 : 3,474.84 = 928.76 : x
  2. Step 2: Convert to fraction form
    2,315.65/3,474.84 = 928.76/x
  3. Step 3: Cross multiply
    2,315.65x = 3,474.84 × 928.76
  4. Step 4: Simplify right side
    2,315.65x = 3,227,292.40
  5. Step 5: Solve for x
    x = 3,227,292.40/2,315.65
  6. Step 6: Final answer
    x = 1,393.69

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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.