Home / 6,143.02-9,215.07-1,981.42

Finding the Fourth Proportional to 6,143.02, 9,215.07 and 1,981.42

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Solution

The fourth proportional to 6,143.02, 9,215.07 and 1,981.42 is: 2,972.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,143.02 : 9,215.07 = 1,981.42 : x
  2. Step 2: Convert to fraction form
    6,143.02/9,215.07 = 1,981.42/x
  3. Step 3: Cross multiply
    6,143.02x = 9,215.07 × 1,981.42
  4. Step 4: Simplify right side
    6,143.02x = 18,258,924.00
  5. Step 5: Solve for x
    x = 18,258,924.00/6,143.02
  6. Step 6: Final answer
    x = 2,972.30

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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.