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Finding the Fourth Proportional to 8,913.84, 13,370.46 and 4,237.20

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Solution

The fourth proportional to 8,913.84, 13,370.46 and 4,237.20 is: 6,355.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,913.84 : 13,370.46 = 4,237.20 : x
  2. Step 2: Convert to fraction form
    8,913.84/13,370.46 = 4,237.20/x
  3. Step 3: Cross multiply
    8,913.84x = 13,370.46 × 4,237.20
  4. Step 4: Simplify right side
    8,913.84x = 56,653,313.11
  5. Step 5: Solve for x
    x = 56,653,313.11/8,913.84
  6. Step 6: Final answer
    x = 6,355.66

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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.