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Finding the Fourth Proportional to 2,658.51, 3,969.65 and 2,379.06

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Solution

The fourth proportional to 2,658.51, 3,969.65 and 2,379.06 is: 3,552.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,658.51 : 3,969.65 = 2,379.06 : x
  2. Step 2: Convert to fraction form
    2,658.51/3,969.65 = 2,379.06/x
  3. Step 3: Cross multiply
    2,658.51x = 3,969.65 × 2,379.06
  4. Step 4: Simplify right side
    2,658.51x = 9,444,041.48
  5. Step 5: Solve for x
    x = 9,444,041.48/2,658.51
  6. Step 6: Final answer
    x = 3,552.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.