Home / 1,728.15-2,384.83-942.19

Finding the Fourth Proportional to 1,728.15, 2,384.83 and 942.19

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Solution

The fourth proportional to 1,728.15, 2,384.83 and 942.19 is: 1,300.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.15 : 2,384.83 = 942.19 : x
  2. Step 2: Convert to fraction form
    1,728.15/2,384.83 = 942.19/x
  3. Step 3: Cross multiply
    1,728.15x = 2,384.83 × 942.19
  4. Step 4: Simplify right side
    1,728.15x = 2,246,962.98
  5. Step 5: Solve for x
    x = 2,246,962.98/1,728.15
  6. Step 6: Final answer
    x = 1,300.21

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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.