Home / 1,720.32-2,372.98-1,499.79

Finding the Fourth Proportional to 1,720.32, 2,372.98 and 1,499.79

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Solution

The fourth proportional to 1,720.32, 2,372.98 and 1,499.79 is: 2,068.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.32 : 2,372.98 = 1,499.79 : x
  2. Step 2: Convert to fraction form
    1,720.32/2,372.98 = 1,499.79/x
  3. Step 3: Cross multiply
    1,720.32x = 2,372.98 × 1,499.79
  4. Step 4: Simplify right side
    1,720.32x = 3,558,979.64
  5. Step 5: Solve for x
    x = 3,558,979.64/1,720.32
  6. Step 6: Final answer
    x = 2,068.79

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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.