Home / 3,315.31-4,574.46-1,970.89

Finding the Fourth Proportional to 3,315.31, 4,574.46 and 1,970.89

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Solution

The fourth proportional to 3,315.31, 4,574.46 and 1,970.89 is: 2,719.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.31 : 4,574.46 = 1,970.89 : x
  2. Step 2: Convert to fraction form
    3,315.31/4,574.46 = 1,970.89/x
  3. Step 3: Cross multiply
    3,315.31x = 4,574.46 × 1,970.89
  4. Step 4: Simplify right side
    3,315.31x = 9,015,757.47
  5. Step 5: Solve for x
    x = 9,015,757.47/3,315.31
  6. Step 6: Final answer
    x = 2,719.43

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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.