Home / 9,005.42-12,429.10-5,371.70

Finding the Fourth Proportional to 9,005.42, 12,429.10 and 5,371.70

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Solution

The fourth proportional to 9,005.42, 12,429.10 and 5,371.70 is: 7,413.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,005.42 : 12,429.10 = 5,371.70 : x
  2. Step 2: Convert to fraction form
    9,005.42/12,429.10 = 5,371.70/x
  3. Step 3: Cross multiply
    9,005.42x = 12,429.10 × 5,371.70
  4. Step 4: Simplify right side
    9,005.42x = 66,765,341.04
  5. Step 5: Solve for x
    x = 66,765,341.04/9,005.42
  6. Step 6: Final answer
    x = 7,413.90

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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.