Home / 8,675.36-13,011.09-3,990.87

Finding the Fourth Proportional to 8,675.36, 13,011.09 and 3,990.87

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Solution

The fourth proportional to 8,675.36, 13,011.09 and 3,990.87 is: 5,985.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,675.36 : 13,011.09 = 3,990.87 : x
  2. Step 2: Convert to fraction form
    8,675.36/13,011.09 = 3,990.87/x
  3. Step 3: Cross multiply
    8,675.36x = 13,011.09 × 3,990.87
  4. Step 4: Simplify right side
    8,675.36x = 51,925,632.51
  5. Step 5: Solve for x
    x = 51,925,632.51/8,675.36
  6. Step 6: Final answer
    x = 5,985.41

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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.