Home / 3,090.61-4,262.16-1,970.38

Finding the Fourth Proportional to 3,090.61, 4,262.16 and 1,970.38

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Solution

The fourth proportional to 3,090.61, 4,262.16 and 1,970.38 is: 2,717.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.61 : 4,262.16 = 1,970.38 : x
  2. Step 2: Convert to fraction form
    3,090.61/4,262.16 = 1,970.38/x
  3. Step 3: Cross multiply
    3,090.61x = 4,262.16 × 1,970.38
  4. Step 4: Simplify right side
    3,090.61x = 8,398,074.82
  5. Step 5: Solve for x
    x = 8,398,074.82/3,090.61
  6. Step 6: Final answer
    x = 2,717.29

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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.