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Finding the Fourth Proportional to 8,898.40, 13,336.24 and 4,218.40

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Solution

The fourth proportional to 8,898.40, 13,336.24 and 4,218.40 is: 6,322.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,898.40 : 13,336.24 = 4,218.40 : x
  2. Step 2: Convert to fraction form
    8,898.40/13,336.24 = 4,218.40/x
  3. Step 3: Cross multiply
    8,898.40x = 13,336.24 × 4,218.40
  4. Step 4: Simplify right side
    8,898.40x = 56,257,594.82
  5. Step 5: Solve for x
    x = 56,257,594.82/8,898.40
  6. Step 6: Final answer
    x = 6,322.21

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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.