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Finding the Fourth Proportional to 6,143.60, 9,215.40 and 4,588.40

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Solution

The fourth proportional to 6,143.60, 9,215.40 and 4,588.40 is: 6,882.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,143.60 : 9,215.40 = 4,588.40 : x
  2. Step 2: Convert to fraction form
    6,143.60/9,215.40 = 4,588.40/x
  3. Step 3: Cross multiply
    6,143.60x = 9,215.40 × 4,588.40
  4. Step 4: Simplify right side
    6,143.60x = 42,283,941.36
  5. Step 5: Solve for x
    x = 42,283,941.36/6,143.60
  6. Step 6: Final answer
    x = 6,882.60

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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.