Home / 5,109.08-7,663.97-1,988.89

Finding the Fourth Proportional to 5,109.08, 7,663.97 and 1,988.89

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Solution

The fourth proportional to 5,109.08, 7,663.97 and 1,988.89 is: 2,983.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.08 : 7,663.97 = 1,988.89 : x
  2. Step 2: Convert to fraction form
    5,109.08/7,663.97 = 1,988.89/x
  3. Step 3: Cross multiply
    5,109.08x = 7,663.97 × 1,988.89
  4. Step 4: Simplify right side
    5,109.08x = 15,242,767.92
  5. Step 5: Solve for x
    x = 15,242,767.92/5,109.08
  6. Step 6: Final answer
    x = 2,983.46

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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.