Home / 12,710.40-19,065.60-3,946.20

Finding the Fourth Proportional to 12,710.40, 19,065.60 and 3,946.20

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Solution

The fourth proportional to 12,710.40, 19,065.60 and 3,946.20 is: 5,919.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,710.40 : 19,065.60 = 3,946.20 : x
  2. Step 2: Convert to fraction form
    12,710.40/19,065.60 = 3,946.20/x
  3. Step 3: Cross multiply
    12,710.40x = 19,065.60 × 3,946.20
  4. Step 4: Simplify right side
    12,710.40x = 75,236,670.72
  5. Step 5: Solve for x
    x = 75,236,670.72/12,710.40
  6. Step 6: Final answer
    x = 5,919.30

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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.