Home / 3,101.37-4,279.88-1,685.06

Finding the Fourth Proportional to 3,101.37, 4,279.88 and 1,685.06

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Solution

The fourth proportional to 3,101.37, 4,279.88 and 1,685.06 is: 2,325.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.37 : 4,279.88 = 1,685.06 : x
  2. Step 2: Convert to fraction form
    3,101.37/4,279.88 = 1,685.06/x
  3. Step 3: Cross multiply
    3,101.37x = 4,279.88 × 1,685.06
  4. Step 4: Simplify right side
    3,101.37x = 7,211,860.75
  5. Step 5: Solve for x
    x = 7,211,860.75/3,101.37
  6. Step 6: Final answer
    x = 2,325.38

Related Problems

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Half scale
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Double scale
Find fourth proportional to 3,102.37, 4,281.26 and 1,686.06
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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.