Home / 8,985.51-12,399.68-5,006.42

Finding the Fourth Proportional to 8,985.51, 12,399.68 and 5,006.42

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Solution

The fourth proportional to 8,985.51, 12,399.68 and 5,006.42 is: 6,908.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.51 : 12,399.68 = 5,006.42 : x
  2. Step 2: Convert to fraction form
    8,985.51/12,399.68 = 5,006.42/x
  3. Step 3: Cross multiply
    8,985.51x = 12,399.68 × 5,006.42
  4. Step 4: Simplify right side
    8,985.51x = 62,077,918.92
  5. Step 5: Solve for x
    x = 62,077,918.92/8,985.51
  6. Step 6: Final answer
    x = 6,908.67

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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.