Home / 1,658.66-2,288.61-986.45

Finding the Fourth Proportional to 1,658.66, 2,288.61 and 986.45

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Solution

The fourth proportional to 1,658.66, 2,288.61 and 986.45 is: 1,361.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,658.66 : 2,288.61 = 986.45 : x
  2. Step 2: Convert to fraction form
    1,658.66/2,288.61 = 986.45/x
  3. Step 3: Cross multiply
    1,658.66x = 2,288.61 × 986.45
  4. Step 4: Simplify right side
    1,658.66x = 2,257,587.89
  5. Step 5: Solve for x
    x = 2,257,587.89/1,658.66
  6. Step 6: Final answer
    x = 1,361.10

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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.