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Finding the Fourth Proportional to 1,658.56, 2,291.13 and 1,571.08

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Solution

The fourth proportional to 1,658.56, 2,291.13 and 1,571.08 is: 2,170.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,658.56 : 2,291.13 = 1,571.08 : x
  2. Step 2: Convert to fraction form
    1,658.56/2,291.13 = 1,571.08/x
  3. Step 3: Cross multiply
    1,658.56x = 2,291.13 × 1,571.08
  4. Step 4: Simplify right side
    1,658.56x = 3,599,529.21
  5. Step 5: Solve for x
    x = 3,599,529.21/1,658.56
  6. Step 6: Final answer
    x = 2,170.28

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1.5x scale

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.