Home / 9,143.48-12,617.40-5,165

Finding the Fourth Proportional to 9,143.48, 12,617.40 and 5,165

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Solution

The fourth proportional to 9,143.48, 12,617.40 and 5,165 is: 7,127.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,143.48 : 12,617.40 = 5,165 : x
  2. Step 2: Convert to fraction form
    9,143.48/12,617.40 = 5,165/x
  3. Step 3: Cross multiply
    9,143.48x = 12,617.40 × 5,165
  4. Step 4: Simplify right side
    9,143.48x = 65,168,871
  5. Step 5: Solve for x
    x = 65,168,871/9,143.48
  6. Step 6: Final answer
    x = 7,127.36

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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.