Home / 3,315.24-4,972.32-1,123.92

Finding the Fourth Proportional to 3,315.24, 4,972.32 and 1,123.92

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Solution

The fourth proportional to 3,315.24, 4,972.32 and 1,123.92 is: 1,685.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.24 : 4,972.32 = 1,123.92 : x
  2. Step 2: Convert to fraction form
    3,315.24/4,972.32 = 1,123.92/x
  3. Step 3: Cross multiply
    3,315.24x = 4,972.32 × 1,123.92
  4. Step 4: Simplify right side
    3,315.24x = 5,588,489.89
  5. Step 5: Solve for x
    x = 5,588,489.89/3,315.24
  6. Step 6: Final answer
    x = 1,685.70

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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.