Home / 8,631.65-11,911.80-4,855.13

Finding the Fourth Proportional to 8,631.65, 11,911.80 and 4,855.13

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Solution

The fourth proportional to 8,631.65, 11,911.80 and 4,855.13 is: 6,700.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.65 : 11,911.80 = 4,855.13 : x
  2. Step 2: Convert to fraction form
    8,631.65/11,911.80 = 4,855.13/x
  3. Step 3: Cross multiply
    8,631.65x = 11,911.80 × 4,855.13
  4. Step 4: Simplify right side
    8,631.65x = 57,833,277.98
  5. Step 5: Solve for x
    x = 57,833,277.98/8,631.65
  6. Step 6: Final answer
    x = 6,700.15

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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.