Home / 1,727.19-2,382.21-1,121.67

Finding the Fourth Proportional to 1,727.19, 2,382.21 and 1,121.67

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Solution

The fourth proportional to 1,727.19, 2,382.21 and 1,121.67 is: 1,547.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,727.19 : 2,382.21 = 1,121.67 : x
  2. Step 2: Convert to fraction form
    1,727.19/2,382.21 = 1,121.67/x
  3. Step 3: Cross multiply
    1,727.19x = 2,382.21 × 1,121.67
  4. Step 4: Simplify right side
    1,727.19x = 2,672,053.49
  5. Step 5: Solve for x
    x = 2,672,053.49/1,727.19
  6. Step 6: Final answer
    x = 1,547.05

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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.