Home / 8,341.12-12,515.34-3,145.78

Finding the Fourth Proportional to 8,341.12, 12,515.34 and 3,145.78

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Solution

The fourth proportional to 8,341.12, 12,515.34 and 3,145.78 is: 4,720.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,341.12 : 12,515.34 = 3,145.78 : x
  2. Step 2: Convert to fraction form
    8,341.12/12,515.34 = 3,145.78/x
  3. Step 3: Cross multiply
    8,341.12x = 12,515.34 × 3,145.78
  4. Step 4: Simplify right side
    8,341.12x = 39,370,533.71
  5. Step 5: Solve for x
    x = 39,370,533.71/8,341.12
  6. Step 6: Final answer
    x = 4,720.05

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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.