Home / 3,113.60-4,670.40-805.10

Finding the Fourth Proportional to 3,113.60, 4,670.40 and 805.10

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Solution

The fourth proportional to 3,113.60, 4,670.40 and 805.10 is: 1,207.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.60 : 4,670.40 = 805.10 : x
  2. Step 2: Convert to fraction form
    3,113.60/4,670.40 = 805.10/x
  3. Step 3: Cross multiply
    3,113.60x = 4,670.40 × 805.10
  4. Step 4: Simplify right side
    3,113.60x = 3,760,139.04
  5. Step 5: Solve for x
    x = 3,760,139.04/3,113.60
  6. Step 6: Final answer
    x = 1,207.65

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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.