Home / 3,355.19-4,630.12-1,938.34

Finding the Fourth Proportional to 3,355.19, 4,630.12 and 1,938.34

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Solution

The fourth proportional to 3,355.19, 4,630.12 and 1,938.34 is: 2,674.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,355.19 : 4,630.12 = 1,938.34 : x
  2. Step 2: Convert to fraction form
    3,355.19/4,630.12 = 1,938.34/x
  3. Step 3: Cross multiply
    3,355.19x = 4,630.12 × 1,938.34
  4. Step 4: Simplify right side
    3,355.19x = 8,974,746.80
  5. Step 5: Solve for x
    x = 8,974,746.80/3,355.19
  6. Step 6: Final answer
    x = 2,674.88

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Half scale
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Double scale
Find fourth proportional to 3,356.19, 4,631.50 and 1,939.34
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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.