Home / 8,621.58-12,931.76-3,074.30

Finding the Fourth Proportional to 8,621.58, 12,931.76 and 3,074.30

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Solution

The fourth proportional to 8,621.58, 12,931.76 and 3,074.30 is: 4,611.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.58 : 12,931.76 = 3,074.30 : x
  2. Step 2: Convert to fraction form
    8,621.58/12,931.76 = 3,074.30/x
  3. Step 3: Cross multiply
    8,621.58x = 12,931.76 × 3,074.30
  4. Step 4: Simplify right side
    8,621.58x = 39,756,029.74
  5. Step 5: Solve for x
    x = 39,756,029.74/8,621.58
  6. Step 6: Final answer
    x = 4,611.22

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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.