Home / 1,293.12-1,939.59-471.30

Finding the Fourth Proportional to 1,293.12, 1,939.59 and 471.30

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Solution

The fourth proportional to 1,293.12, 1,939.59 and 471.30 is: 706.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293.12 : 1,939.59 = 471.30 : x
  2. Step 2: Convert to fraction form
    1,293.12/1,939.59 = 471.30/x
  3. Step 3: Cross multiply
    1,293.12x = 1,939.59 × 471.30
  4. Step 4: Simplify right side
    1,293.12x = 914,128.77
  5. Step 5: Solve for x
    x = 914,128.77/1,293.12
  6. Step 6: Final answer
    x = 706.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.