Home / 9,145.79-12,620.45-5,167.25

Finding the Fourth Proportional to 9,145.79, 12,620.45 and 5,167.25

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Solution

The fourth proportional to 9,145.79, 12,620.45 and 5,167.25 is: 7,130.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,145.79 : 12,620.45 = 5,167.25 : x
  2. Step 2: Convert to fraction form
    9,145.79/12,620.45 = 5,167.25/x
  3. Step 3: Cross multiply
    9,145.79x = 12,620.45 × 5,167.25
  4. Step 4: Simplify right side
    9,145.79x = 65,212,994.43
  5. Step 5: Solve for x
    x = 65,212,994.43/9,145.79
  6. Step 6: Final answer
    x = 7,130.38

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Half scale
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Double scale
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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.