Home / 1,728.77-2,384.79-1,169.42

Finding the Fourth Proportional to 1,728.77, 2,384.79 and 1,169.42

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Solution

The fourth proportional to 1,728.77, 2,384.79 and 1,169.42 is: 1,613.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.77 : 2,384.79 = 1,169.42 : x
  2. Step 2: Convert to fraction form
    1,728.77/2,384.79 = 1,169.42/x
  3. Step 3: Cross multiply
    1,728.77x = 2,384.79 × 1,169.42
  4. Step 4: Simplify right side
    1,728.77x = 2,788,827.08
  5. Step 5: Solve for x
    x = 2,788,827.08/1,728.77
  6. Step 6: Final answer
    x = 1,613.19

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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.