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Finding the Fourth Proportional to 8,478.51, 11,699.94 and 4,701.83

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Solution

The fourth proportional to 8,478.51, 11,699.94 and 4,701.83 is: 6,488.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.51 : 11,699.94 = 4,701.83 : x
  2. Step 2: Convert to fraction form
    8,478.51/11,699.94 = 4,701.83/x
  3. Step 3: Cross multiply
    8,478.51x = 11,699.94 × 4,701.83
  4. Step 4: Simplify right side
    8,478.51x = 55,011,158.14
  5. Step 5: Solve for x
    x = 55,011,158.14/8,478.51
  6. Step 6: Final answer
    x = 6,488.30

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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.