Home / 1,728.11-2,384.82-942.18

Finding the Fourth Proportional to 1,728.11, 2,384.82 and 942.18

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Solution

The fourth proportional to 1,728.11, 2,384.82 and 942.18 is: 1,300.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.11 : 2,384.82 = 942.18 : x
  2. Step 2: Convert to fraction form
    1,728.11/2,384.82 = 942.18/x
  3. Step 3: Cross multiply
    1,728.11x = 2,384.82 × 942.18
  4. Step 4: Simplify right side
    1,728.11x = 2,246,929.71
  5. Step 5: Solve for x
    x = 2,246,929.71/1,728.11
  6. Step 6: Final answer
    x = 1,300.23

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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.