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Finding the Fourth Proportional to 4,988.86, 7,478.72 and 2,216.08

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Solution

The fourth proportional to 4,988.86, 7,478.72 and 2,216.08 is: 3,322.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,988.86 : 7,478.72 = 2,216.08 : x
  2. Step 2: Convert to fraction form
    4,988.86/7,478.72 = 2,216.08/x
  3. Step 3: Cross multiply
    4,988.86x = 7,478.72 × 2,216.08
  4. Step 4: Simplify right side
    4,988.86x = 16,573,441.82
  5. Step 5: Solve for x
    x = 16,573,441.82/4,988.86
  6. Step 6: Final answer
    x = 3,322.09

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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.