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Finding the Fourth Proportional to 6,472.40, 8,928.60 and 4,206.92

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Solution

The fourth proportional to 6,472.40, 8,928.60 and 4,206.92 is: 5,803.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,472.40 : 8,928.60 = 4,206.92 : x
  2. Step 2: Convert to fraction form
    6,472.40/8,928.60 = 4,206.92/x
  3. Step 3: Cross multiply
    6,472.40x = 8,928.60 × 4,206.92
  4. Step 4: Simplify right side
    6,472.40x = 37,561,905.91
  5. Step 5: Solve for x
    x = 37,561,905.91/6,472.40
  6. Step 6: Final answer
    x = 5,803.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.