Home / 1,722.13-2,376.48-976.11

Finding the Fourth Proportional to 1,722.13, 2,376.48 and 976.11

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Solution

The fourth proportional to 1,722.13, 2,376.48 and 976.11 is: 1,347.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.13 : 2,376.48 = 976.11 : x
  2. Step 2: Convert to fraction form
    1,722.13/2,376.48 = 976.11/x
  3. Step 3: Cross multiply
    1,722.13x = 2,376.48 × 976.11
  4. Step 4: Simplify right side
    1,722.13x = 2,319,705.89
  5. Step 5: Solve for x
    x = 2,319,705.89/1,722.13
  6. Step 6: Final answer
    x = 1,347.00

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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.