Home / 2,275.11-3,412.94-631.71

Finding the Fourth Proportional to 2,275.11, 3,412.94 and 631.71

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Solution

The fourth proportional to 2,275.11, 3,412.94 and 631.71 is: 947.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.11 : 3,412.94 = 631.71 : x
  2. Step 2: Convert to fraction form
    2,275.11/3,412.94 = 631.71/x
  3. Step 3: Cross multiply
    2,275.11x = 3,412.94 × 631.71
  4. Step 4: Simplify right side
    2,275.11x = 2,155,985.17
  5. Step 5: Solve for x
    x = 2,155,985.17/2,275.11
  6. Step 6: Final answer
    x = 947.64

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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.