Home / 3,113.10-4,669.65-1,385.10

Finding the Fourth Proportional to 3,113.10, 4,669.65 and 1,385.10

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Solution

The fourth proportional to 3,113.10, 4,669.65 and 1,385.10 is: 2,077.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.10 : 4,669.65 = 1,385.10 : x
  2. Step 2: Convert to fraction form
    3,113.10/4,669.65 = 1,385.10/x
  3. Step 3: Cross multiply
    3,113.10x = 4,669.65 × 1,385.10
  4. Step 4: Simplify right side
    3,113.10x = 6,467,932.22
  5. Step 5: Solve for x
    x = 6,467,932.22/3,113.10
  6. Step 6: Final answer
    x = 2,077.65

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Double scale
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Similar ratio
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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.