Home / 2,275.25-3,412.31-631.71

Finding the Fourth Proportional to 2,275.25, 3,412.31 and 631.71

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Solution

The fourth proportional to 2,275.25, 3,412.31 and 631.71 is: 947.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.25 : 3,412.31 = 631.71 : x
  2. Step 2: Convert to fraction form
    2,275.25/3,412.31 = 631.71/x
  3. Step 3: Cross multiply
    2,275.25x = 3,412.31 × 631.71
  4. Step 4: Simplify right side
    2,275.25x = 2,155,587.19
  5. Step 5: Solve for x
    x = 2,155,587.19/2,275.25
  6. Step 6: Final answer
    x = 947.41

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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.