Home / 1,722.36-2,376.90-976.32

Finding the Fourth Proportional to 1,722.36, 2,376.90 and 976.32

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Solution

The fourth proportional to 1,722.36, 2,376.90 and 976.32 is: 1,347.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.36 : 2,376.90 = 976.32 : x
  2. Step 2: Convert to fraction form
    1,722.36/2,376.90 = 976.32/x
  3. Step 3: Cross multiply
    1,722.36x = 2,376.90 × 976.32
  4. Step 4: Simplify right side
    1,722.36x = 2,320,615.01
  5. Step 5: Solve for x
    x = 2,320,615.01/1,722.36
  6. Step 6: Final answer
    x = 1,347.35

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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.