Home / 8,989.98-13,484.55-3,147.90

Finding the Fourth Proportional to 8,989.98, 13,484.55 and 3,147.90

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Solution

The fourth proportional to 8,989.98, 13,484.55 and 3,147.90 is: 4,721.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.98 : 13,484.55 = 3,147.90 : x
  2. Step 2: Convert to fraction form
    8,989.98/13,484.55 = 3,147.90/x
  3. Step 3: Cross multiply
    8,989.98x = 13,484.55 × 3,147.90
  4. Step 4: Simplify right side
    8,989.98x = 42,448,014.95
  5. Step 5: Solve for x
    x = 42,448,014.95/8,989.98
  6. Step 6: Final answer
    x = 4,721.70

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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.