Home / 2,992.80-4,130.32-1,666.72

Finding the Fourth Proportional to 2,992.80, 4,130.32 and 1,666.72

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Solution

The fourth proportional to 2,992.80, 4,130.32 and 1,666.72 is: 2,300.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,992.80 : 4,130.32 = 1,666.72 : x
  2. Step 2: Convert to fraction form
    2,992.80/4,130.32 = 1,666.72/x
  3. Step 3: Cross multiply
    2,992.80x = 4,130.32 × 1,666.72
  4. Step 4: Simplify right side
    2,992.80x = 6,884,086.95
  5. Step 5: Solve for x
    x = 6,884,086.95/2,992.80
  6. Step 6: Final answer
    x = 2,300.22

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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.