Home / 2,187.35-3,281.63-1,214.13

Finding the Fourth Proportional to 2,187.35, 3,281.63 and 1,214.13

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Solution

The fourth proportional to 2,187.35, 3,281.63 and 1,214.13 is: 1,821.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.35 : 3,281.63 = 1,214.13 : x
  2. Step 2: Convert to fraction form
    2,187.35/3,281.63 = 1,214.13/x
  3. Step 3: Cross multiply
    2,187.35x = 3,281.63 × 1,214.13
  4. Step 4: Simplify right side
    2,187.35x = 3,984,319.36
  5. Step 5: Solve for x
    x = 3,984,319.36/2,187.35
  6. Step 6: Final answer
    x = 1,821.53

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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.