Home / 8,455.11-11,668.50-4,870.62

Finding the Fourth Proportional to 8,455.11, 11,668.50 and 4,870.62

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Solution

The fourth proportional to 8,455.11, 11,668.50 and 4,870.62 is: 6,721.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.11 : 11,668.50 = 4,870.62 : x
  2. Step 2: Convert to fraction form
    8,455.11/11,668.50 = 4,870.62/x
  3. Step 3: Cross multiply
    8,455.11x = 11,668.50 × 4,870.62
  4. Step 4: Simplify right side
    8,455.11x = 56,832,829.47
  5. Step 5: Solve for x
    x = 56,832,829.47/8,455.11
  6. Step 6: Final answer
    x = 6,721.71

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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.