Home / 1,159.16-1,738.74-389.66

Finding the Fourth Proportional to 1,159.16, 1,738.74 and 389.66

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Solution

The fourth proportional to 1,159.16, 1,738.74 and 389.66 is: 584.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159.16 : 1,738.74 = 389.66 : x
  2. Step 2: Convert to fraction form
    1,159.16/1,738.74 = 389.66/x
  3. Step 3: Cross multiply
    1,159.16x = 1,738.74 × 389.66
  4. Step 4: Simplify right side
    1,159.16x = 677,517.43
  5. Step 5: Solve for x
    x = 677,517.43/1,159.16
  6. Step 6: Final answer
    x = 584.49

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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.