Home / 2,920.05-4,380.06-1,686.66

Finding the Fourth Proportional to 2,920.05, 4,380.06 and 1,686.66

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Solution

The fourth proportional to 2,920.05, 4,380.06 and 1,686.66 is: 2,529.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.05 : 4,380.06 = 1,686.66 : x
  2. Step 2: Convert to fraction form
    2,920.05/4,380.06 = 1,686.66/x
  3. Step 3: Cross multiply
    2,920.05x = 4,380.06 × 1,686.66
  4. Step 4: Simplify right side
    2,920.05x = 7,387,672.00
  5. Step 5: Solve for x
    x = 7,387,672.00/2,920.05
  6. Step 6: Final answer
    x = 2,529.98

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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.