Home / 3,118.51-4,674.12-1,385.92

Finding the Fourth Proportional to 3,118.51, 4,674.12 and 1,385.92

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Solution

The fourth proportional to 3,118.51, 4,674.12 and 1,385.92 is: 2,077.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.51 : 4,674.12 = 1,385.92 : x
  2. Step 2: Convert to fraction form
    3,118.51/4,674.12 = 1,385.92/x
  3. Step 3: Cross multiply
    3,118.51x = 4,674.12 × 1,385.92
  4. Step 4: Simplify right side
    3,118.51x = 6,477,956.39
  5. Step 5: Solve for x
    x = 6,477,956.39/3,118.51
  6. Step 6: Final answer
    x = 2,077.26

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Double scale
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1.5x scale

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.