Home / 2,849.20-3,931.80-1,671.06

Finding the Fourth Proportional to 2,849.20, 3,931.80 and 1,671.06

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Solution

The fourth proportional to 2,849.20, 3,931.80 and 1,671.06 is: 2,306.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,849.20 : 3,931.80 = 1,671.06 : x
  2. Step 2: Convert to fraction form
    2,849.20/3,931.80 = 1,671.06/x
  3. Step 3: Cross multiply
    2,849.20x = 3,931.80 × 1,671.06
  4. Step 4: Simplify right side
    2,849.20x = 6,570,273.71
  5. Step 5: Solve for x
    x = 6,570,273.71/2,849.20
  6. Step 6: Final answer
    x = 2,306.01

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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.