Home / 8,006.40-12,007.98-2,812.68

Finding the Fourth Proportional to 8,006.40, 12,007.98 and 2,812.68

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Solution

The fourth proportional to 8,006.40, 12,007.98 and 2,812.68 is: 4,218.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,006.40 : 12,007.98 = 2,812.68 : x
  2. Step 2: Convert to fraction form
    8,006.40/12,007.98 = 2,812.68/x
  3. Step 3: Cross multiply
    8,006.40x = 12,007.98 × 2,812.68
  4. Step 4: Simplify right side
    8,006.40x = 33,774,605.19
  5. Step 5: Solve for x
    x = 33,774,605.19/8,006.40
  6. Step 6: Final answer
    x = 4,218.45

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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.