Home / 2,531.20-3,491.04-1,872.40

Finding the Fourth Proportional to 2,531.20, 3,491.04 and 1,872.40

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Solution

The fourth proportional to 2,531.20, 3,491.04 and 1,872.40 is: 2,582.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,531.20 : 3,491.04 = 1,872.40 : x
  2. Step 2: Convert to fraction form
    2,531.20/3,491.04 = 1,872.40/x
  3. Step 3: Cross multiply
    2,531.20x = 3,491.04 × 1,872.40
  4. Step 4: Simplify right side
    2,531.20x = 6,536,623.30
  5. Step 5: Solve for x
    x = 6,536,623.30/2,531.20
  6. Step 6: Final answer
    x = 2,582.42

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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.