Home / 1,433.32-1,977.36-1,039.66

Finding the Fourth Proportional to 1,433.32, 1,977.36 and 1,039.66

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Solution

The fourth proportional to 1,433.32, 1,977.36 and 1,039.66 is: 1,434.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433.32 : 1,977.36 = 1,039.66 : x
  2. Step 2: Convert to fraction form
    1,433.32/1,977.36 = 1,039.66/x
  3. Step 3: Cross multiply
    1,433.32x = 1,977.36 × 1,039.66
  4. Step 4: Simplify right side
    1,433.32x = 2,055,782.10
  5. Step 5: Solve for x
    x = 2,055,782.10/1,433.32
  6. Step 6: Final answer
    x = 1,434.28

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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.