Home / 2,381.90-3,285.56-1,574.35

Finding the Fourth Proportional to 2,381.90, 3,285.56 and 1,574.35

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Solution

The fourth proportional to 2,381.90, 3,285.56 and 1,574.35 is: 2,171.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.90 : 3,285.56 = 1,574.35 : x
  2. Step 2: Convert to fraction form
    2,381.90/3,285.56 = 1,574.35/x
  3. Step 3: Cross multiply
    2,381.90x = 3,285.56 × 1,574.35
  4. Step 4: Simplify right side
    2,381.90x = 5,172,617.11
  5. Step 5: Solve for x
    x = 5,172,617.11/2,381.90
  6. Step 6: Final answer
    x = 2,171.64

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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.