Home / 8,172.47-12,257.48-2,977.13

Finding the Fourth Proportional to 8,172.47, 12,257.48 and 2,977.13

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Solution

The fourth proportional to 8,172.47, 12,257.48 and 2,977.13 is: 4,465.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,172.47 : 12,257.48 = 2,977.13 : x
  2. Step 2: Convert to fraction form
    8,172.47/12,257.48 = 2,977.13/x
  3. Step 3: Cross multiply
    8,172.47x = 12,257.48 × 2,977.13
  4. Step 4: Simplify right side
    8,172.47x = 36,492,057.59
  5. Step 5: Solve for x
    x = 36,492,057.59/8,172.47
  6. Step 6: Final answer
    x = 4,465.24

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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.