Home / 4,912.79-7,369.12-1,215.02

Finding the Fourth Proportional to 4,912.79, 7,369.12 and 1,215.02

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Solution

The fourth proportional to 4,912.79, 7,369.12 and 1,215.02 is: 1,822.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,912.79 : 7,369.12 = 1,215.02 : x
  2. Step 2: Convert to fraction form
    4,912.79/7,369.12 = 1,215.02/x
  3. Step 3: Cross multiply
    4,912.79x = 7,369.12 × 1,215.02
  4. Step 4: Simplify right side
    4,912.79x = 8,953,628.18
  5. Step 5: Solve for x
    x = 8,953,628.18/4,912.79
  6. Step 6: Final answer
    x = 1,822.51

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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.