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Finding the Fourth Proportional to 1,726.91, 2,383.04 and 980.77

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Solution

The fourth proportional to 1,726.91, 2,383.04 and 980.77 is: 1,353.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,726.91 : 2,383.04 = 980.77 : x
  2. Step 2: Convert to fraction form
    1,726.91/2,383.04 = 980.77/x
  3. Step 3: Cross multiply
    1,726.91x = 2,383.04 × 980.77
  4. Step 4: Simplify right side
    1,726.91x = 2,337,202.23
  5. Step 5: Solve for x
    x = 2,337,202.23/1,726.91
  6. Step 6: Final answer
    x = 1,353.41

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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.