Home / 8,780.02-13,168.65-2,857.12

Finding the Fourth Proportional to 8,780.02, 13,168.65 and 2,857.12

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Solution

The fourth proportional to 8,780.02, 13,168.65 and 2,857.12 is: 4,285.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.02 : 13,168.65 = 2,857.12 : x
  2. Step 2: Convert to fraction form
    8,780.02/13,168.65 = 2,857.12/x
  3. Step 3: Cross multiply
    8,780.02x = 13,168.65 × 2,857.12
  4. Step 4: Simplify right side
    8,780.02x = 37,624,413.29
  5. Step 5: Solve for x
    x = 37,624,413.29/8,780.02
  6. Step 6: Final answer
    x = 4,285.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.