Home / 1,739.72-2,402-1,291.70

Finding the Fourth Proportional to 1,739.72, 2,402 and 1,291.70

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Solution

The fourth proportional to 1,739.72, 2,402 and 1,291.70 is: 1,783.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,739.72 : 2,402 = 1,291.70 : x
  2. Step 2: Convert to fraction form
    1,739.72/2,402 = 1,291.70/x
  3. Step 3: Cross multiply
    1,739.72x = 2,402 × 1,291.70
  4. Step 4: Simplify right side
    1,739.72x = 3,102,663.40
  5. Step 5: Solve for x
    x = 3,102,663.40/1,739.72
  6. Step 6: Final answer
    x = 1,783.43

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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.