Home / 2,156.92-2,977.98-1,658.64

Finding the Fourth Proportional to 2,156.92, 2,977.98 and 1,658.64

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Solution

The fourth proportional to 2,156.92, 2,977.98 and 1,658.64 is: 2,290.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.92 : 2,977.98 = 1,658.64 : x
  2. Step 2: Convert to fraction form
    2,156.92/2,977.98 = 1,658.64/x
  3. Step 3: Cross multiply
    2,156.92x = 2,977.98 × 1,658.64
  4. Step 4: Simplify right side
    2,156.92x = 4,939,396.75
  5. Step 5: Solve for x
    x = 4,939,396.75/2,156.92
  6. Step 6: Final answer
    x = 2,290.02

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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.