Home / 1,686.05-2,325.43-1,126.32

Finding the Fourth Proportional to 1,686.05, 2,325.43 and 1,126.32

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Solution

The fourth proportional to 1,686.05, 2,325.43 and 1,126.32 is: 1,553.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.05 : 2,325.43 = 1,126.32 : x
  2. Step 2: Convert to fraction form
    1,686.05/2,325.43 = 1,126.32/x
  3. Step 3: Cross multiply
    1,686.05x = 2,325.43 × 1,126.32
  4. Step 4: Simplify right side
    1,686.05x = 2,619,178.32
  5. Step 5: Solve for x
    x = 2,619,178.32/1,686.05
  6. Step 6: Final answer
    x = 1,553.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.