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Finding the Fourth Proportional to 2,156.77, 3,235.47 and 695.98

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Solution

The fourth proportional to 2,156.77, 3,235.47 and 695.98 is: 1,044.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.77 : 3,235.47 = 695.98 : x
  2. Step 2: Convert to fraction form
    2,156.77/3,235.47 = 695.98/x
  3. Step 3: Cross multiply
    2,156.77x = 3,235.47 × 695.98
  4. Step 4: Simplify right side
    2,156.77x = 2,251,822.41
  5. Step 5: Solve for x
    x = 2,251,822.41/2,156.77
  6. Step 6: Final answer
    x = 1,044.07

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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.