Home / 1,192.29-1,775.85-1,138.98

Finding the Fourth Proportional to 1,192.29, 1,775.85 and 1,138.98

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Solution

The fourth proportional to 1,192.29, 1,775.85 and 1,138.98 is: 1,696.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192.29 : 1,775.85 = 1,138.98 : x
  2. Step 2: Convert to fraction form
    1,192.29/1,775.85 = 1,138.98/x
  3. Step 3: Cross multiply
    1,192.29x = 1,775.85 × 1,138.98
  4. Step 4: Simplify right side
    1,192.29x = 2,022,657.63
  5. Step 5: Solve for x
    x = 2,022,657.63/1,192.29
  6. Step 6: Final answer
    x = 1,696.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.