Home / 8,812.40-12,158.64-5,670.41

Finding the Fourth Proportional to 8,812.40, 12,158.64 and 5,670.41

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Solution

The fourth proportional to 8,812.40, 12,158.64 and 5,670.41 is: 7,823.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.40 : 12,158.64 = 5,670.41 : x
  2. Step 2: Convert to fraction form
    8,812.40/12,158.64 = 5,670.41/x
  3. Step 3: Cross multiply
    8,812.40x = 12,158.64 × 5,670.41
  4. Step 4: Simplify right side
    8,812.40x = 68,944,413.05
  5. Step 5: Solve for x
    x = 68,944,413.05/8,812.40
  6. Step 6: Final answer
    x = 7,823.57

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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.