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Finding the Fourth Proportional to 1,686.32, 2,326.41 and 1,022.93

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Solution

The fourth proportional to 1,686.32, 2,326.41 and 1,022.93 is: 1,411.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.32 : 2,326.41 = 1,022.93 : x
  2. Step 2: Convert to fraction form
    1,686.32/2,326.41 = 1,022.93/x
  3. Step 3: Cross multiply
    1,686.32x = 2,326.41 × 1,022.93
  4. Step 4: Simplify right side
    1,686.32x = 2,379,754.58
  5. Step 5: Solve for x
    x = 2,379,754.58/1,686.32
  6. Step 6: Final answer
    x = 1,411.21

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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.