Home / 9,164.40-12,647.10-5,185.32

Finding the Fourth Proportional to 9,164.40, 12,647.10 and 5,185.32

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Solution

The fourth proportional to 9,164.40, 12,647.10 and 5,185.32 is: 7,155.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,164.40 : 12,647.10 = 5,185.32 : x
  2. Step 2: Convert to fraction form
    9,164.40/12,647.10 = 5,185.32/x
  3. Step 3: Cross multiply
    9,164.40x = 12,647.10 × 5,185.32
  4. Step 4: Simplify right side
    9,164.40x = 65,579,260.57
  5. Step 5: Solve for x
    x = 65,579,260.57/9,164.40
  6. Step 6: Final answer
    x = 7,155.87

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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.