Home / 3,135.16-4,325.42-1,808.76

Finding the Fourth Proportional to 3,135.16, 4,325.42 and 1,808.76

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Solution

The fourth proportional to 3,135.16, 4,325.42 and 1,808.76 is: 2,495.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.16 : 4,325.42 = 1,808.76 : x
  2. Step 2: Convert to fraction form
    3,135.16/4,325.42 = 1,808.76/x
  3. Step 3: Cross multiply
    3,135.16x = 4,325.42 × 1,808.76
  4. Step 4: Simplify right side
    3,135.16x = 7,823,646.68
  5. Step 5: Solve for x
    x = 7,823,646.68/3,135.16
  6. Step 6: Final answer
    x = 2,495.45

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Half scale
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Double scale
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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.