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Finding the Fourth Proportional to 1,710.64, 2,561.91 and 1,342.90

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Solution

The fourth proportional to 1,710.64, 2,561.91 and 1,342.90 is: 2,011.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,710.64 : 2,561.91 = 1,342.90 : x
  2. Step 2: Convert to fraction form
    1,710.64/2,561.91 = 1,342.90/x
  3. Step 3: Cross multiply
    1,710.64x = 2,561.91 × 1,342.90
  4. Step 4: Simplify right side
    1,710.64x = 3,440,388.94
  5. Step 5: Solve for x
    x = 3,440,388.94/1,710.64
  6. Step 6: Final answer
    x = 2,011.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.