Home / 3,070.68-4,239.12-1,892.40

Finding the Fourth Proportional to 3,070.68, 4,239.12 and 1,892.40

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Solution

The fourth proportional to 3,070.68, 4,239.12 and 1,892.40 is: 2,612.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,070.68 : 4,239.12 = 1,892.40 : x
  2. Step 2: Convert to fraction form
    3,070.68/4,239.12 = 1,892.40/x
  3. Step 3: Cross multiply
    3,070.68x = 4,239.12 × 1,892.40
  4. Step 4: Simplify right side
    3,070.68x = 8,022,110.69
  5. Step 5: Solve for x
    x = 8,022,110.69/3,070.68
  6. Step 6: Final answer
    x = 2,612.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.