Home / 9,412.19-12,988.89-5,163.29

Finding the Fourth Proportional to 9,412.19, 12,988.89 and 5,163.29

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Solution

The fourth proportional to 9,412.19, 12,988.89 and 5,163.29 is: 7,125.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,412.19 : 12,988.89 = 5,163.29 : x
  2. Step 2: Convert to fraction form
    9,412.19/12,988.89 = 5,163.29/x
  3. Step 3: Cross multiply
    9,412.19x = 12,988.89 × 5,163.29
  4. Step 4: Simplify right side
    9,412.19x = 67,065,340.90
  5. Step 5: Solve for x
    x = 67,065,340.90/9,412.19
  6. Step 6: Final answer
    x = 7,125.37

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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.