Home / 8,070.15-12,105.96-3,140.16

Finding the Fourth Proportional to 8,070.15, 12,105.96 and 3,140.16

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Solution

The fourth proportional to 8,070.15, 12,105.96 and 3,140.16 is: 4,710.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,070.15 : 12,105.96 = 3,140.16 : x
  2. Step 2: Convert to fraction form
    8,070.15/12,105.96 = 3,140.16/x
  3. Step 3: Cross multiply
    8,070.15x = 12,105.96 × 3,140.16
  4. Step 4: Simplify right side
    8,070.15x = 38,014,651.35
  5. Step 5: Solve for x
    x = 38,014,651.35/8,070.15
  6. Step 6: Final answer
    x = 4,710.53

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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.