Home / 8,699.68-12,011.34-5,164.03

Finding the Fourth Proportional to 8,699.68, 12,011.34 and 5,164.03

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Solution

The fourth proportional to 8,699.68, 12,011.34 and 5,164.03 is: 7,129.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.68 : 12,011.34 = 5,164.03 : x
  2. Step 2: Convert to fraction form
    8,699.68/12,011.34 = 5,164.03/x
  3. Step 3: Cross multiply
    8,699.68x = 12,011.34 × 5,164.03
  4. Step 4: Simplify right side
    8,699.68x = 62,026,920.10
  5. Step 5: Solve for x
    x = 62,026,920.10/8,699.68
  6. Step 6: Final answer
    x = 7,129.79

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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.