Home / 3,142.47-4,336.77-1,726.23

Finding the Fourth Proportional to 3,142.47, 4,336.77 and 1,726.23

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Solution

The fourth proportional to 3,142.47, 4,336.77 and 1,726.23 is: 2,382.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,142.47 : 4,336.77 = 1,726.23 : x
  2. Step 2: Convert to fraction form
    3,142.47/4,336.77 = 1,726.23/x
  3. Step 3: Cross multiply
    3,142.47x = 4,336.77 × 1,726.23
  4. Step 4: Simplify right side
    3,142.47x = 7,486,262.48
  5. Step 5: Solve for x
    x = 7,486,262.48/3,142.47
  6. Step 6: Final answer
    x = 2,382.29

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Half scale
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Double scale
Find fourth proportional to 3,143.47, 4,338.15 and 1,727.23
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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.