Home / 1,942.12-2,912.69-555.47

Finding the Fourth Proportional to 1,942.12, 2,912.69 and 555.47

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Solution

The fourth proportional to 1,942.12, 2,912.69 and 555.47 is: 833.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.12 : 2,912.69 = 555.47 : x
  2. Step 2: Convert to fraction form
    1,942.12/2,912.69 = 555.47/x
  3. Step 3: Cross multiply
    1,942.12x = 2,912.69 × 555.47
  4. Step 4: Simplify right side
    1,942.12x = 1,617,901.47
  5. Step 5: Solve for x
    x = 1,617,901.47/1,942.12
  6. Step 6: Final answer
    x = 833.06

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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.