Home / 2,212.77-3,319.33-631.47

Finding the Fourth Proportional to 2,212.77, 3,319.33 and 631.47

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Solution

The fourth proportional to 2,212.77, 3,319.33 and 631.47 is: 947.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.77 : 3,319.33 = 631.47 : x
  2. Step 2: Convert to fraction form
    2,212.77/3,319.33 = 631.47/x
  3. Step 3: Cross multiply
    2,212.77x = 3,319.33 × 631.47
  4. Step 4: Simplify right side
    2,212.77x = 2,096,040.72
  5. Step 5: Solve for x
    x = 2,096,040.72/2,212.77
  6. Step 6: Final answer
    x = 947.25

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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.