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Finding the Fourth Proportional to 8,124.80, 11,212.08 and 4,587.76

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Solution

The fourth proportional to 8,124.80, 11,212.08 and 4,587.76 is: 6,331.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,124.80 : 11,212.08 = 4,587.76 : x
  2. Step 2: Convert to fraction form
    8,124.80/11,212.08 = 4,587.76/x
  3. Step 3: Cross multiply
    8,124.80x = 11,212.08 × 4,587.76
  4. Step 4: Simplify right side
    8,124.80x = 51,438,332.14
  5. Step 5: Solve for x
    x = 51,438,332.14/8,124.80
  6. Step 6: Final answer
    x = 6,331.03

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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.