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Finding the Fourth Proportional to 1,658.80, 2,301.55 and 1,644.67

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Solution

The fourth proportional to 1,658.80, 2,301.55 and 1,644.67 is: 2,281.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,658.80 : 2,301.55 = 1,644.67 : x
  2. Step 2: Convert to fraction form
    1,658.80/2,301.55 = 1,644.67/x
  3. Step 3: Cross multiply
    1,658.80x = 2,301.55 × 1,644.67
  4. Step 4: Simplify right side
    1,658.80x = 3,785,290.24
  5. Step 5: Solve for x
    x = 3,785,290.24/1,658.80
  6. Step 6: Final answer
    x = 2,281.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.